Finding the Fourth Proportional to 2,477, 3,715.82 and 916.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477 : 3,715.82 = 916.80 : x
2. Step 2: Convert to fraction form
   2,477/3,715.82 = 916.80/x
3. Step 3: Cross multiply
   2,477x = 3,715.82 × 916.80
4. Step 4: Simplify right side
   2,477x = 3,406,663.78
5. Step 5: Solve for x
   x = 3,406,663.78/2,477
6. Step 6: Final answer
   x = 1,375.32