Finding the Fourth Proportional to 677,061.18, 1,015,037.46 and 339,694.56

Step by Step Solution

1. Step 1: Write the proportion equation
   677,061.18 : 1,015,037.46 = 339,694.56 : x
2. Step 2: Convert to fraction form
   677,061.18/1,015,037.46 = 339,694.56/x
3. Step 3: Cross multiply
   677,061.18x = 1,015,037.46 × 339,694.56
4. Step 4: Simplify right side
   677,061.18x = 344,802,703,358.22
5. Step 5: Solve for x
   x = 344,802,703,358.22/677,061.18
6. Step 6: Final answer
   x = 509,263.73