Finding the Fourth Proportional to 1,472.29, 2,031.89 and 809.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.29 : 2,031.89 = 809.28 : x
2. Step 2: Convert to fraction form
   1,472.29/2,031.89 = 809.28/x
3. Step 3: Cross multiply
   1,472.29x = 2,031.89 × 809.28
4. Step 4: Simplify right side
   1,472.29x = 1,644,367.94
5. Step 5: Solve for x
   x = 1,644,367.94/1,472.29
6. Step 6: Final answer
   x = 1,116.88