Finding the Fourth Proportional to 1,450.63, 2,001.83 and 861.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,450.63 : 2,001.83 = 861.15 : x
2. Step 2: Convert to fraction form
   1,450.63/2,001.83 = 861.15/x
3. Step 3: Cross multiply
   1,450.63x = 2,001.83 × 861.15
4. Step 4: Simplify right side
   1,450.63x = 1,723,875.90
5. Step 5: Solve for x
   x = 1,723,875.90/1,450.63
6. Step 6: Final answer
   x = 1,188.36