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.