Finding the Fourth Proportional to 2,715.97, 4,072.90 and 1,156.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.97 : 4,072.90 = 1,156.71 : x
2. Step 2: Convert to fraction form
   2,715.97/4,072.90 = 1,156.71/x
3. Step 3: Cross multiply
   2,715.97x = 4,072.90 × 1,156.71
4. Step 4: Simplify right side
   2,715.97x = 4,711,164.16
5. Step 5: Solve for x
   x = 4,711,164.16/2,715.97
6. Step 6: Final answer
   x = 1,734.62