Finding the Fourth Proportional to 1,450.86, 2,002.17 and 861.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,450.86 : 2,002.17 = 861.49 : x
2. Step 2: Convert to fraction form
   1,450.86/2,002.17 = 861.49/x
3. Step 3: Cross multiply
   1,450.86x = 2,002.17 × 861.49
4. Step 4: Simplify right side
   1,450.86x = 1,724,849.43
5. Step 5: Solve for x
   x = 1,724,849.43/1,450.86
6. Step 6: Final answer
   x = 1,188.85