Finding the Fourth Proportional to 654,399.30, 981,404.55 and 254,810.10

Step by Step Solution

1. Step 1: Write the proportion equation
   654,399.30 : 981,404.55 = 254,810.10 : x
2. Step 2: Convert to fraction form
   654,399.30/981,404.55 = 254,810.10/x
3. Step 3: Cross multiply
   654,399.30x = 981,404.55 × 254,810.10
4. Step 4: Simplify right side
   654,399.30x = 250,071,791,525.96
5. Step 5: Solve for x
   x = 250,071,791,525.96/654,399.30
6. Step 6: Final answer
   x = 382,139.45