Finding the Fourth Proportional to 935,978.58, 1,291,541.22 and 528,086.88

Step by Step Solution

1. Step 1: Write the proportion equation
   935,978.58 : 1,291,541.22 = 528,086.88 : x
2. Step 2: Convert to fraction form
   935,978.58/1,291,541.22 = 528,086.88/x
3. Step 3: Cross multiply
   935,978.58x = 1,291,541.22 × 528,086.88
4. Step 4: Simplify right side
   935,978.58x = 682,045,973,261.19
5. Step 5: Solve for x
   x = 682,045,973,261.19/935,978.58
6. Step 6: Final answer
   x = 728,698.27