Finding the Fourth Proportional to 2,715.18, 4,072.32 and 767.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.18 : 4,072.32 = 767.04 : x
2. Step 2: Convert to fraction form
   2,715.18/4,072.32 = 767.04/x
3. Step 3: Cross multiply
   2,715.18x = 4,072.32 × 767.04
4. Step 4: Simplify right side
   2,715.18x = 3,123,632.33
5. Step 5: Solve for x
   x = 3,123,632.33/2,715.18
6. Step 6: Final answer
   x = 1,150.43