Finding the Fourth Proportional to 2,428,945.49, 3,644,679.17 and 990,684.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428,945.49 : 3,644,679.17 = 990,684.08 : x
2. Step 2: Convert to fraction form
   2,428,945.49/3,644,679.17 = 990,684.08/x
3. Step 3: Cross multiply
   2,428,945.49x = 3,644,679.17 × 990,684.08
4. Step 4: Simplify right side
   2,428,945.49x = 3,610,725,630,426.61
5. Step 5: Solve for x
   x = 3,610,725,630,426.61/2,428,945.49
6. Step 6: Final answer
   x = 1,486,540.41