Finding the Fourth Proportional to 1,482.72, 2,046.25 and 861.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,482.72 : 2,046.25 = 861.72 : x
2. Step 2: Convert to fraction form
   1,482.72/2,046.25 = 861.72/x
3. Step 3: Cross multiply
   1,482.72x = 2,046.25 × 861.72
4. Step 4: Simplify right side
   1,482.72x = 1,763,294.55
5. Step 5: Solve for x
   x = 1,763,294.55/1,482.72
6. Step 6: Final answer
   x = 1,189.23