No one can tell you how much it will weigh unless we know how thick the acrylic is. At .5" thick, with the dimensions listed it will weigh between 250 to 300lbs. At 1" thick it will weigh between 550 and 600lbs. If the dimensions you listed are 96"Long x 24"Wide x 36"High, then it's hopefully made out of material that's at least 1" thick. But if it's only 24" high and 36" wide, it could possibly be made out of .5" thick acrylic and Fishman's estimate would be correct.
Please post pix of this beast! Good luck with getting it into your place.