Finding the Fourth Proportional to 2,428,939.25, 3,644,669.79 and 990,677.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428,939.25 : 3,644,669.79 = 990,677.83 : x
2. Step 2: Convert to fraction form
   2,428,939.25/3,644,669.79 = 990,677.83/x
3. Step 3: Cross multiply
   2,428,939.25x = 3,644,669.79 × 990,677.83
4. Step 4: Simplify right side
   2,428,939.25x = 3,610,693,540,400.41
5. Step 5: Solve for x
   x = 3,610,693,540,400.41/2,428,939.25
6. Step 6: Final answer
   x = 1,486,531.02