Finding the Fourth Proportional to 2,377.76, 3,565.86 and 1,128.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,377.76 : 3,565.86 = 1,128.18 : x
2. Step 2: Convert to fraction form
   2,377.76/3,565.86 = 1,128.18/x
3. Step 3: Cross multiply
   2,377.76x = 3,565.86 × 1,128.18
4. Step 4: Simplify right side
   2,377.76x = 4,022,951.91
5. Step 5: Solve for x
   x = 4,022,951.91/2,377.76
6. Step 6: Final answer
   x = 1,691.91