Finding the Fourth Proportional to 3,898,429.20, 5,842,536.79 and 1,872,642.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898,429.20 : 5,842,536.79 = 1,872,642.55 : x
2. Step 2: Convert to fraction form
   3,898,429.20/5,842,536.79 = 1,872,642.55/x
3. Step 3: Cross multiply
   3,898,429.20x = 5,842,536.79 × 1,872,642.55
4. Step 4: Simplify right side
   3,898,429.20x = 10,940,982,992,894.41
5. Step 5: Solve for x
   x = 10,940,982,992,894.41/3,898,429.20
6. Step 6: Final answer
   x = 2,806,510.63