Finding the Fourth Proportional to 656,903.69, 906,528.41 and 355,097.69

Step by Step Solution

1. Step 1: Write the proportion equation
   656,903.69 : 906,528.41 = 355,097.69 : x
2. Step 2: Convert to fraction form
   656,903.69/906,528.41 = 355,097.69/x
3. Step 3: Cross multiply
   656,903.69x = 906,528.41 × 355,097.69
4. Step 4: Simplify right side
   656,903.69x = 321,906,138,002.24
5. Step 5: Solve for x
   x = 321,906,138,002.24/656,903.69
6. Step 6: Final answer
   x = 490,035.52