Finding the Fourth Proportional to 2,476.70, 3,715.54 and 916.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,476.70 : 3,715.54 = 916.72 : x
2. Step 2: Convert to fraction form
   2,476.70/3,715.54 = 916.72/x
3. Step 3: Cross multiply
   2,476.70x = 3,715.54 × 916.72
4. Step 4: Simplify right side
   2,476.70x = 3,406,103.45
5. Step 5: Solve for x
   x = 3,406,103.45/2,476.70
6. Step 6: Final answer
   x = 1,375.26