Finding the Fourth Proportional to 1,021.59, 1,530.32 and 714.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021.59 : 1,530.32 = 714.11 : x
2. Step 2: Convert to fraction form
   1,021.59/1,530.32 = 714.11/x
3. Step 3: Cross multiply
   1,021.59x = 1,530.32 × 714.11
4. Step 4: Simplify right side
   1,021.59x = 1,092,805.59
5. Step 5: Solve for x
   x = 1,092,805.59/1,021.59
6. Step 6: Final answer
   x = 1,069.71