Finding the Fourth Proportional to 657,253.98, 906,188.72 and 548,514.72

Step by Step Solution

1. Step 1: Write the proportion equation
   657,253.98 : 906,188.72 = 548,514.72 : x
2. Step 2: Convert to fraction form
   657,253.98/906,188.72 = 548,514.72/x
3. Step 3: Cross multiply
   657,253.98x = 906,188.72 × 548,514.72
4. Step 4: Simplify right side
   657,253.98x = 497,057,849,275.39
5. Step 5: Solve for x
   x = 497,057,849,275.39/657,253.98
6. Step 6: Final answer
   x = 756,264.50