Finding the Fourth Proportional to 2,629,123.20, 3,942,129.60 and 1,369,411.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629,123.20 : 3,942,129.60 = 1,369,411.20 : x
2. Step 2: Convert to fraction form
   2,629,123.20/3,942,129.60 = 1,369,411.20/x
3. Step 3: Cross multiply
   2,629,123.20x = 3,942,129.60 × 1,369,411.20
4. Step 4: Simplify right side
   2,629,123.20x = 5,398,396,426,091.52
5. Step 5: Solve for x
   x = 5,398,396,426,091.52/2,629,123.20
6. Step 6: Final answer
   x = 2,053,306.75