Let's try my math:
This month has:
~ 4.5 weeks (4 weeks and 3 days) i know it sounds crazy but trust me
3rd week till now:
Total: 44.33 sales per week or 6.33 per day
Monthly number of sales should be:
44.33/7 * 31 = 196 sales
Now how much this is in earnings?
For example: i have 1000 now in earnings.
1000/19=52.63 per day
52.63 * 31 = 1631
Someone will say it's awesome, but it's not.
I'm missing about 100 sales more, that's the trick.
100 * 6.33 = 633
If everything would be normal it should be:
1631 + 633 = 2264 and bingo i got my average monthly earnings and my quarter should be awesome!
This is the way i do every single week, month, quarter and a year.