Finding the Fourth Proportional to 2,715.17, 4,072.82 and 767.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.17 : 4,072.82 = 767.25 : x
2. Step 2: Convert to fraction form
   2,715.17/4,072.82 = 767.25/x
3. Step 3: Cross multiply
   2,715.17x = 4,072.82 × 767.25
4. Step 4: Simplify right side
   2,715.17x = 3,124,867.31
5. Step 5: Solve for x
   x = 3,124,867.31/2,715.17
6. Step 6: Final answer
   x = 1,150.89