Finding the Fourth Proportional to 690,500.82, 1,035,086.91 and 353,700.09

Step by Step Solution

1. Step 1: Write the proportion equation
   690,500.82 : 1,035,086.91 = 353,700.09 : x
2. Step 2: Convert to fraction form
   690,500.82/1,035,086.91 = 353,700.09/x
3. Step 3: Cross multiply
   690,500.82x = 1,035,086.91 × 353,700.09
4. Step 4: Simplify right side
   690,500.82x = 366,110,333,224.82
5. Step 5: Solve for x
   x = 366,110,333,224.82/690,500.82
6. Step 6: Final answer
   x = 530,209.85