Finding the Fourth Proportional to 1,450.89, 2,002.28 and 821.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,450.89 : 2,002.28 = 821.52 : x
2. Step 2: Convert to fraction form
   1,450.89/2,002.28 = 821.52/x
3. Step 3: Cross multiply
   1,450.89x = 2,002.28 × 821.52
4. Step 4: Simplify right side
   1,450.89x = 1,644,908.96
5. Step 5: Solve for x
   x = 1,644,908.96/1,450.89
6. Step 6: Final answer
   x = 1,133.72