Finding the Fourth Proportional to 2,798.71, 3,861.95 and 1,539.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.71 : 3,861.95 = 1,539.74 : x
2. Step 2: Convert to fraction form
   2,798.71/3,861.95 = 1,539.74/x
3. Step 3: Cross multiply
   2,798.71x = 3,861.95 × 1,539.74
4. Step 4: Simplify right side
   2,798.71x = 5,946,398.89
5. Step 5: Solve for x
   x = 5,946,398.89/2,798.71
6. Step 6: Final answer
   x = 2,124.69