Express $4.\overline{054}$ as a common fraction in lowest terms.
If we expand it out, we get 4.054054054.....
Setting this equal to x, we have:
1000x = 4054.054054054...
x = 4.054054054...
Subtracting the equations, we get:
999x = 4050
x = 4050/999
x = 450/111
x = 150/37