Finding the Fourth Proportional to 1,228.52, 1,843.42 and 715.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.52 : 1,843.42 = 715.24 : x
2. Step 2: Convert to fraction form
   1,228.52/1,843.42 = 715.24/x
3. Step 3: Cross multiply
   1,228.52x = 1,843.42 × 715.24
4. Step 4: Simplify right side
   1,228.52x = 1,318,487.72
5. Step 5: Solve for x
   x = 1,318,487.72/1,228.52
6. Step 6: Final answer
   x = 1,073.23