Finding the Fourth Proportional to 2,671.38, 4,007.13 and 916.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,671.38 : 4,007.13 = 916.37 : x
2. Step 2: Convert to fraction form
   2,671.38/4,007.13 = 916.37/x
3. Step 3: Cross multiply
   2,671.38x = 4,007.13 × 916.37
4. Step 4: Simplify right side
   2,671.38x = 3,672,013.72
5. Step 5: Solve for x
   x = 3,672,013.72/2,671.38
6. Step 6: Final answer
   x = 1,374.58