Finding the Fourth Proportional to 2,710.89, 4,059.84 and 1,391.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,710.89 : 4,059.84 = 1,391.17 : x
2. Step 2: Convert to fraction form
   2,710.89/4,059.84 = 1,391.17/x
3. Step 3: Cross multiply
   2,710.89x = 4,059.84 × 1,391.17
4. Step 4: Simplify right side
   2,710.89x = 5,647,927.61
5. Step 5: Solve for x
   x = 5,647,927.61/2,710.89
6. Step 6: Final answer
   x = 2,083.42