Finding the Fourth Proportional to 1,456.43, 2,182.21 and 1,022.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.43 : 2,182.21 = 1,022.81 : x
2. Step 2: Convert to fraction form
   1,456.43/2,182.21 = 1,022.81/x
3. Step 3: Cross multiply
   1,456.43x = 2,182.21 × 1,022.81
4. Step 4: Simplify right side
   1,456.43x = 2,231,972.74
5. Step 5: Solve for x
   x = 2,231,972.74/1,456.43
6. Step 6: Final answer
   x = 1,532.50