Finding the Fourth Proportional to 2,671.52, 4,006.72 and 916.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,671.52 : 4,006.72 = 916.34 : x
2. Step 2: Convert to fraction form
   2,671.52/4,006.72 = 916.34/x
3. Step 3: Cross multiply
   2,671.52x = 4,006.72 × 916.34
4. Step 4: Simplify right side
   2,671.52x = 3,671,517.80
5. Step 5: Solve for x
   x = 3,671,517.80/2,671.52
6. Step 6: Final answer
   x = 1,374.32