Finding the Fourth Proportional to 687,065.52, 948,150.72 and 418,793.52

Step by Step Solution

1. Step 1: Write the proportion equation
   687,065.52 : 948,150.72 = 418,793.52 : x
2. Step 2: Convert to fraction form
   687,065.52/948,150.72 = 418,793.52/x
3. Step 3: Cross multiply
   687,065.52x = 948,150.72 × 418,793.52
4. Step 4: Simplify right side
   687,065.52x = 397,079,377,519.33
5. Step 5: Solve for x
   x = 397,079,377,519.33/687,065.52
6. Step 6: Final answer
   x = 577,935.24