Finding the Fourth Proportional to 2,797.89, 3,861.18 and 1,539.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,797.89 : 3,861.18 = 1,539.15 : x
2. Step 2: Convert to fraction form
   2,797.89/3,861.18 = 1,539.15/x
3. Step 3: Cross multiply
   2,797.89x = 3,861.18 × 1,539.15
4. Step 4: Simplify right side
   2,797.89x = 5,942,935.20
5. Step 5: Solve for x
   x = 5,942,935.20/2,797.89
6. Step 6: Final answer
   x = 2,124.08