asslamalaykom,
my fiance makes $4000 a month. That is pretty poor for USA. (He is from morocco). Do u think asking him for $5000 would be too much? I want enuf money that shud something (SubhanAllah) ever happen I will be able to still live w/o my parents.
Salaam,
It depends. You might have to investigate closer - he might have some financial obligations from family, auto loan, college tuition, etc. I think you should both compromise on a reasonal amount. You might want to take into consideration about the cost of your wedding and who is going to pay for that.
Also, be sure you state his salary correctly, because $4,000 could be the gross amount but after taxes, health insurance, 401K, it's probably close to $3,000.
I don't know where in the U.S. you and your fiance reside, but $4,000 could be good in Wyoming but little in Chicago or Washington DC, because the cost of living is much higher in major cities.