Finding the Fourth Proportional to 1,020.25, 1,529.15 and 710.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020.25 : 1,529.15 = 710.42 : x
2. Step 2: Convert to fraction form
   1,020.25/1,529.15 = 710.42/x
3. Step 3: Cross multiply
   1,020.25x = 1,529.15 × 710.42
4. Step 4: Simplify right side
   1,020.25x = 1,086,344.34
5. Step 5: Solve for x
   x = 1,086,344.34/1,020.25
6. Step 6: Final answer
   x = 1,064.79