Finding the Fourth Proportional to 2,377.73, 3,565.78 and 916.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,377.73 : 3,565.78 = 916.76 : x
2. Step 2: Convert to fraction form
   2,377.73/3,565.78 = 916.76/x
3. Step 3: Cross multiply
   2,377.73x = 3,565.78 × 916.76
4. Step 4: Simplify right side
   2,377.73x = 3,268,964.47
5. Step 5: Solve for x
   x = 3,268,964.47/2,377.73
6. Step 6: Final answer
   x = 1,374.83