
<PAGE>
 
                          OFFER TO PURCHASE FOR CASH
                    ALL OUTSTANDING SHARES OF COMMON STOCK
                                      OF
                               FORUM GROUP, INC.
                                      BY
                             FG ACQUISITION CORP.
                     A WHOLLY OWNED INDIRECT SUBSIDIARY OF
                         MARRIOTT INTERNATIONAL, INC.
                                      AT
                             $13.00 NET PER SHARE
 
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 THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
 TIME, ON THURSDAY, MARCH 21, 1996, UNLESS THE OFFER IS EXTENDED.
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To Brokers, Dealers, Commercial Banks,                        February 23, 1996
Trust Companies and Other Nominees:
                                      
 
  We have been appointed by FG Acquisition Corp. (the "Purchaser"), an Indiana
corporation and a wholly owned indirect subsidiary of Marriott International,
Inc., a Delaware corporation ("Parent"), to act as Information Agent in
connection with its offer to purchase all outstanding shares of common stock,
without par value (the "Shares"), of Forum Group, Inc., an Indiana corporation
(the "Company"), at $13.00 per Share, net to the seller in cash, without
interest, upon the terms and subject to the conditions set forth in the
Purchaser's Offer to Purchase, dated February 23, 1996 (the "Offer to
Purchase"), and the related Letter of Transmittal (which together constitute
the "Offer"), copies of which are enclosed herewith. The Offer is being made
in connection with the Agreement and Plan of Merger, dated as of February 15,
1996, among the Purchaser, Parent and the Company.
 
  For your information and for forwarding to your clients for whose accounts
you hold Shares registered in your name or in the name of your nominee, we are
enclosing the following documents:
 
  1. Offer to Purchase;
 
  2. Letter of Transmittal for your use and for the information of your
     clients, together with Guidelines for Certification of Taxpayer
     Identification Number on Substitute Form W-9 providing information
     relating to backup federal income tax withholding;
 
  3. Notice of Guaranteed Delivery to be used to accept the Offer if the
     Shares and all other required documents cannot be delivered to the
     Depositary by the Expiration Date (as defined in the Offer to Purchase);
 
  4. A form of letter which may be sent to your clients for whose accounts
     you hold Shares registered in your name or in the name of your nominee,
     with space provided for obtaining such clients' instructions with regard
     to the Offer;
 
  5. Solicitation/Recommendation Statement on Schedule 14D-9 issued by the
     Company; and
 
  6. Return envelope addressed to First Chicago Trust Company of New York, as
     the Depositary.
 
  Upon the terms and subject to the conditions of the Offer (including, if the
Offer is extended or amended, the terms and conditions of any such extension
or amendment), the Purchaser will be deemed to have accepted for payment, and
will pay for, all Shares validly tendered and not properly withdrawn prior to
the Expiration Date (as defined in the Offer to Purchase) when, as and if the
Purchaser gives oral or written notice to the Depositary of the Purchaser's
acceptance of such Shares for payment pursuant to the Offer. Payment for
Shares purchased pursuant to the Offer will be made only after timely receipt
by the Depositary of certificates for such
<PAGE>
 
Shares (or confirmation of a book-entry transfer of such Shares into the
Depositary's account at one of the Book-Entry Transfer Facilities (as defined
in the Offer to Purchase)), a properly completed and duly executed Letter of
Transmittal (or facsimile thereof) (unless, in the case of a book-entry
transfer, an Agent's Message (as defined in the Offer to Purchase) is
utilized) and any other documents required by the Letter of Transmittal.
 
  In order to take advantage of the Offer, a duly executed and properly
completed Letter of Transmittal, with any required signature guarantees and
any other required documents, should be sent to the Depositary, and
certificates representing the tendered Shares should be delivered, all in
accordance with the instructions set forth in the Letter of Transmittal and
the Offer to Purchase.
 
  If holders of Shares wish to tender their Shares, but it is impracticable
for them to deliver their certificates on or prior to the Expiration Date or
to comply with the book-entry transfer procedures on a timely basis, a tender
may be effected by following the guaranteed delivery procedures specified in
Section 3 of the Offer to Purchase.
 
  The Purchaser will not pay any fees or commissions to any broker, dealer or
other person (other than the Information Agent and Depositary as described in
the Offer to Purchase) in connection with the solicitation of tenders of
Shares pursuant to the Offer. The Purchaser will, however, upon request,
reimburse brokers, dealers, commercial banks and trust companies for
reasonable and necessary costs and expenses incurred by them in forwarding
materials to their customers. The Purchaser will pay all stock transfer taxes
applicable to its purchase of Shares pursuant to the Offer, subject to
Instruction 6 of the Letter of Transmittal.
 
  YOUR PROMPT ACTION IS REQUESTED. WE URGE YOU TO CONTACT YOUR CLIENTS AS
PROMPTLY AS POSSIBLE. THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00
MIDNIGHT, NEW YORK CITY TIME, ON THURSDAY, MARCH 21, 1996, UNLESS THE OFFER IS
EXTENDED.
 
  Any inquiries you may have with respect to the Offer should be addressed to,
and additional copies of the enclosed materials may be obtained from, the
Information Agent or the undersigned at the addresses and telephone numbers
set forth on the back cover page of the Offer to Purchase.
 
                                          Very truly yours,
 
                                          MacKenzie Partners, Inc.
 
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 NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU
 OR ANY PERSON AS AN AGENT OF THE PURCHASER, PARENT, THE COMPANY, ANY
 AFFILIATE OF THE COMPANY, THE INFORMATION AGENT OR THE DEPOSITARY, OR
 AUTHORIZE YOU OR ANY OTHER PERSON TO USE ANY DOCUMENT OR MAKE ANY STATEMENT
 ON BEHALF OF ANY OF THEM IN CONNECTION WITH THE OFFER OTHER THAN THE
 DOCUMENTS ENCLOSED HEREWITH AND THE STATEMENTS CONTAINED THEREIN.
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