Posted by Duke on .
1200=500/x + 500/x^2 + 500/x^3 + 500/x^4

Math 
Steve,
1200 = 500(1/x+1/x^2+1/x^3+1/x^4)
12/5 x^4  x^3  x^2  x  1 = 0
Now, quartics are tough to solve algebraically. Use your favorite numerical method to crack this one.