Finding the Fourth Proportional to 1,143.27, 1,715.58 and 792.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.27 : 1,715.58 = 792.15 : x
2. Step 2: Convert to fraction form
   1,143.27/1,715.58 = 792.15/x
3. Step 3: Cross multiply
   1,143.27x = 1,715.58 × 792.15
4. Step 4: Simplify right side
   1,143.27x = 1,358,996.70
5. Step 5: Solve for x
   x = 1,358,996.70/1,143.27
6. Step 6: Final answer
   x = 1,188.69