The dot marks pin#1 on the chip. So in your pic pin#1 would be on the first from left on bottom row. #4 is 4th from left.

Click image for larger version. 

Name:	RT8802A_FB.png 
Views:	956 
Size:	42.7 KB 
ID:	91687
(pic from datasheet is rotated 90° clockwise compared to chip in your pic)