Finding the Fourth Proportional to 1,450.88, 2,002.72 and 861.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,450.88 : 2,002.72 = 861.92 : x
2. Step 2: Convert to fraction form
   1,450.88/2,002.72 = 861.92/x
3. Step 3: Cross multiply
   1,450.88x = 2,002.72 × 861.92
4. Step 4: Simplify right side
   1,450.88x = 1,726,184.42
5. Step 5: Solve for x
   x = 1,726,184.42/1,450.88
6. Step 6: Final answer
   x = 1,189.75