I am assuming that when you mention "hashes", those are valid shares.
2h 52min = 172min = 10320sec
2732 shares = 2732(2^32) hashes = 11733850652672 hashes
11733850652672 hashes / 10320 sec = 1137001032.2356589147286821705426 hashes/sec
or 1.137 GH/s
Does this seem accurate for your hardware?
It's been a while since I've done the math for one of these calculations, someone please let me know if I've made a mistake.
It looks right weighing it against mine. 1.3Gh solves ~3240 shares in the same amount of time.