Finding the Fourth Proportional to 3,727.86, 5,142.31 and 2,328.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,727.86 : 5,142.31 = 2,328.18 : x
2. Step 2: Convert to fraction form
   3,727.86/5,142.31 = 2,328.18/x
3. Step 3: Cross multiply
   3,727.86x = 5,142.31 × 2,328.18
4. Step 4: Simplify right side
   3,727.86x = 11,972,223.30
5. Step 5: Solve for x
   x = 11,972,223.30/3,727.86
6. Step 6: Final answer
   x = 3,211.55