Finding the Fourth Proportional to 2,798.72, 3,862.14 and 1,539.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.72 : 3,862.14 = 1,539.76 : x
2. Step 2: Convert to fraction form
   2,798.72/3,862.14 = 1,539.76/x
3. Step 3: Cross multiply
   2,798.72x = 3,862.14 × 1,539.76
4. Step 4: Simplify right side
   2,798.72x = 5,946,776.43
5. Step 5: Solve for x
   x = 5,946,776.43/2,798.72
6. Step 6: Final answer
   x = 2,124.82