full scholarships are being paid out.

Check out the numbers of full equivalent scholarships BYU is limited to based on the sports we sanction.
http://www.cougarboard.com/board/message.html?id=14037262

Total comes to 256.7.

You would then multiply that by $4500 (4500 * 256.7 = $1,155,150) and then divide that among 632 athletes based on their portion of a scholarship they are receiving. For things like Men's basketball and football all those athletes will get that full amount because they are head count sports and they either get a full scholarship or none...