Finding the Fourth Proportional to 801,143.96, 1,105,700.10 and 456,978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   801,143.96 : 1,105,700.10 = 456,978.20 : x
2. Step 2: Convert to fraction form
   801,143.96/1,105,700.10 = 456,978.20/x
3. Step 3: Cross multiply
   801,143.96x = 1,105,700.10 × 456,978.20
4. Step 4: Simplify right side
   801,143.96x = 505,280,841,437.82
5. Step 5: Solve for x
   x = 505,280,841,437.82/801,143.96
6. Step 6: Final answer
   x = 630,699.18