Finding the Fourth Proportional to 2,988,648, 4,124,335.20 and 1,915,560

Step by Step Solution

1. Step 1: Write the proportion equation
   2,988,648 : 4,124,335.20 = 1,915,560 : x
2. Step 2: Convert to fraction form
   2,988,648/4,124,335.20 = 1,915,560/x
3. Step 3: Cross multiply
   2,988,648x = 4,124,335.20 × 1,915,560
4. Step 4: Simplify right side
   2,988,648x = 7,900,411,535,712
5. Step 5: Solve for x
   x = 7,900,411,535,712/2,988,648
6. Step 6: Final answer
   x = 2,643,473.42