Finding the Fourth Proportional to 1,061.52, 1,591.74 and 715.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.52 : 1,591.74 = 715.38 : x
2. Step 2: Convert to fraction form
   1,061.52/1,591.74 = 715.38/x
3. Step 3: Cross multiply
   1,061.52x = 1,591.74 × 715.38
4. Step 4: Simplify right side
   1,061.52x = 1,138,698.96
5. Step 5: Solve for x
   x = 1,138,698.96/1,061.52
6. Step 6: Final answer
   x = 1,072.71