Finding the Fourth Proportional to 2,798.86, 3,862.27 and 1,539.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.86 : 3,862.27 = 1,539.71 : x
2. Step 2: Convert to fraction form
   2,798.86/3,862.27 = 1,539.71/x
3. Step 3: Cross multiply
   2,798.86x = 3,862.27 × 1,539.71
4. Step 4: Simplify right side
   2,798.86x = 5,946,775.74
5. Step 5: Solve for x
   x = 5,946,775.74/2,798.86
6. Step 6: Final answer
   x = 2,124.72