Finding the Fourth Proportional to 801,142.96, 1,105,698.72 and 456,977.20

Step by Step Solution

1. Step 1: Write the proportion equation
   801,142.96 : 1,105,698.72 = 456,977.20 : x
2. Step 2: Convert to fraction form
   801,142.96/1,105,698.72 = 456,977.20/x
3. Step 3: Cross multiply
   801,142.96x = 1,105,698.72 × 456,977.20
4. Step 4: Simplify right side
   801,142.96x = 505,279,105,109.18
5. Step 5: Solve for x
   x = 505,279,105,109.18/801,142.96
6. Step 6: Final answer
   x = 630,697.80