Finding the Fourth Proportional to 2,277.59, 3,142.15 and 1,391.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.59 : 3,142.15 = 1,391.85 : x
2. Step 2: Convert to fraction form
   2,277.59/3,142.15 = 1,391.85/x
3. Step 3: Cross multiply
   2,277.59x = 3,142.15 × 1,391.85
4. Step 4: Simplify right side
   2,277.59x = 4,373,401.48
5. Step 5: Solve for x
   x = 4,373,401.48/2,277.59
6. Step 6: Final answer
   x = 1,920.19