Finding the Fourth Proportional to 945,456.50, 1,417,389.27 and 439,760.54

Step by Step Solution

1. Step 1: Write the proportion equation
   945,456.50 : 1,417,389.27 = 439,760.54 : x
2. Step 2: Convert to fraction form
   945,456.50/1,417,389.27 = 439,760.54/x
3. Step 3: Cross multiply
   945,456.50x = 1,417,389.27 × 439,760.54
4. Step 4: Simplify right side
   945,456.50x = 623,311,870,765.41
5. Step 5: Solve for x
   x = 623,311,870,765.41/945,456.50
6. Step 6: Final answer
   x = 659,270.81