Finding the Fourth Proportional to 2,474.18, 3,712.27 and 1,086.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,474.18 : 3,712.27 = 1,086.78 : x
2. Step 2: Convert to fraction form
   2,474.18/3,712.27 = 1,086.78/x
3. Step 3: Cross multiply
   2,474.18x = 3,712.27 × 1,086.78
4. Step 4: Simplify right side
   2,474.18x = 4,034,420.79
5. Step 5: Solve for x
   x = 4,034,420.79/2,474.18
6. Step 6: Final answer
   x = 1,630.61