Finding the Fourth Proportional to 1,431,151.05, 2,146,807.98 and 406,401.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431,151.05 : 2,146,807.98 = 406,401.15 : x
2. Step 2: Convert to fraction form
   1,431,151.05/2,146,807.98 = 406,401.15/x
3. Step 3: Cross multiply
   1,431,151.05x = 2,146,807.98 × 406,401.15
4. Step 4: Simplify right side
   1,431,151.05x = 872,465,231,901.18
5. Step 5: Solve for x
   x = 872,465,231,901.18/1,431,151.05
6. Step 6: Final answer
   x = 609,624.84