Finding the Fourth Proportional to 2,480.72, 3,715.68 and 1,178.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.72 : 3,715.68 = 1,178.24 : x
2. Step 2: Convert to fraction form
   2,480.72/3,715.68 = 1,178.24/x
3. Step 3: Cross multiply
   2,480.72x = 3,715.68 × 1,178.24
4. Step 4: Simplify right side
   2,480.72x = 4,377,962.80
5. Step 5: Solve for x
   x = 4,377,962.80/2,480.72
6. Step 6: Final answer
   x = 1,764.80