Finding the Fourth Proportional to 2,358.76, 3,540.62 and 1,127.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,358.76 : 3,540.62 = 1,127.20 : x
2. Step 2: Convert to fraction form
   2,358.76/3,540.62 = 1,127.20/x
3. Step 3: Cross multiply
   2,358.76x = 3,540.62 × 1,127.20
4. Step 4: Simplify right side
   2,358.76x = 3,990,986.86
5. Step 5: Solve for x
   x = 3,990,986.86/2,358.76
6. Step 6: Final answer
   x = 1,691.99