Finding the Fourth Proportional to 630,697.60, 871,086.72 and 459,378.82

Step by Step Solution

1. Step 1: Write the proportion equation
   630,697.60 : 871,086.72 = 459,378.82 : x
2. Step 2: Convert to fraction form
   630,697.60/871,086.72 = 459,378.82/x
3. Step 3: Cross multiply
   630,697.60x = 871,086.72 × 459,378.82
4. Step 4: Simplify right side
   630,697.60x = 400,158,789,551.27
5. Step 5: Solve for x
   x = 400,158,789,551.27/630,697.60
6. Step 6: Final answer
   x = 634,470.13