Finding the Fourth Proportional to 1,026.28, 1,412.58 and 715.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,026.28 : 1,412.58 = 715.24 : x
2. Step 2: Convert to fraction form
   1,026.28/1,412.58 = 715.24/x
3. Step 3: Cross multiply
   1,026.28x = 1,412.58 × 715.24
4. Step 4: Simplify right side
   1,026.28x = 1,010,333.72
5. Step 5: Solve for x
   x = 1,010,333.72/1,026.28
6. Step 6: Final answer
   x = 984.46