Finding the Fourth Proportional to 657,123.28, 906,795.72 and 370,643.92

Step by Step Solution

1. Step 1: Write the proportion equation
   657,123.28 : 906,795.72 = 370,643.92 : x
2. Step 2: Convert to fraction form
   657,123.28/906,795.72 = 370,643.92/x
3. Step 3: Cross multiply
   657,123.28x = 906,795.72 × 370,643.92
4. Step 4: Simplify right side
   657,123.28x = 336,098,320,300.02
5. Step 5: Solve for x
   x = 336,098,320,300.02/657,123.28
6. Step 6: Final answer
   x = 511,469.20