Finding the Fourth Proportional to 1,631,864.72, 2,447,217.86 and 478,789.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,631,864.72 : 2,447,217.86 = 478,789.46 : x
2. Step 2: Convert to fraction form
   1,631,864.72/2,447,217.86 = 478,789.46/x
3. Step 3: Cross multiply
   1,631,864.72x = 2,447,217.86 × 478,789.46
4. Step 4: Simplify right side
   1,631,864.72x = 1,171,702,103,061.72
5. Step 5: Solve for x
   x = 1,171,702,103,061.72/1,631,864.72
6. Step 6: Final answer
   x = 718,014.24