Finding the Fourth Proportional to 807,760.90, 1,114,666.72 and 445,112.56

Step by Step Solution

1. Step 1: Write the proportion equation
   807,760.90 : 1,114,666.72 = 445,112.56 : x
2. Step 2: Convert to fraction form
   807,760.90/1,114,666.72 = 445,112.56/x
3. Step 3: Cross multiply
   807,760.90x = 1,114,666.72 × 445,112.56
4. Step 4: Simplify right side
   807,760.90x = 496,152,157,286.00
5. Step 5: Solve for x
   x = 496,152,157,286.00/807,760.90
6. Step 6: Final answer
   x = 614,231.46