Finding the Fourth Proportional to 656,830.72, 906,425.04 and 355,024

Step by Step Solution

1. Step 1: Write the proportion equation
   656,830.72 : 906,425.04 = 355,024 : x
2. Step 2: Convert to fraction form
   656,830.72/906,425.04 = 355,024/x
3. Step 3: Cross multiply
   656,830.72x = 906,425.04 × 355,024
4. Step 4: Simplify right side
   656,830.72x = 321,802,643,400.96
5. Step 5: Solve for x
   x = 321,802,643,400.96/656,830.72
6. Step 6: Final answer
   x = 489,932.39