Finding the Fourth Proportional to 711,057.50, 981,018.96 and 404,916.84

Step by Step Solution

1. Step 1: Write the proportion equation
   711,057.50 : 981,018.96 = 404,916.84 : x
2. Step 2: Convert to fraction form
   711,057.50/981,018.96 = 404,916.84/x
3. Step 3: Cross multiply
   711,057.50x = 981,018.96 × 404,916.84
4. Step 4: Simplify right side
   711,057.50x = 397,231,097,263.29
5. Step 5: Solve for x
   x = 397,231,097,263.29/711,057.50
6. Step 6: Final answer
   x = 558,648.35