1482 MB is the total available virtual memory (RAM + swap file) This value is correct.
1472 MB is all the memory used by all tasks, probably is correct because the computer is almost without memory and ready to crash in any moment.
The problem is that sum of memory used by all task doesn't match the total used ( 1 + 3 + 2 + 4 = 56).
The memory reported used by Poser during rendering is lower than the used in preview mode and if we assume that the missing 1.33 GB is used by Poser is a value ridiculous high for a simple scene.

Stupidity also evolves!