Finding the Fourth Proportional to 2,616,721.12, 3,925,078.52 and 819,744.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616,721.12 : 3,925,078.52 = 819,744.56 : x
2. Step 2: Convert to fraction form
   2,616,721.12/3,925,078.52 = 819,744.56/x
3. Step 3: Cross multiply
   2,616,721.12x = 3,925,078.52 × 819,744.56
4. Step 4: Simplify right side
   2,616,721.12x = 3,217,561,764,342.85
5. Step 5: Solve for x
   x = 3,217,561,764,342.85/2,616,721.12
6. Step 6: Final answer
   x = 1,229,615.85