It depends to some extent on how fermentable your LME is (which depends on the brand). But, all things being equal, you can use the following equation for a guesstimate:
FG = OG - (Attenation * (OG - 1))/100
For your Wyeast 1010, Attenuation 74-78 (we'll say 76):
FG = 1.04 - ( 76 * 0.04) / 100 yielding:
FG ~ 1.010
In reality, I would expect anywhere from 1.008 - 1.014.