Finding the Fourth Proportional to 1,482.88, 2,046.55 and 861.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,482.88 : 2,046.55 = 861.88 : x
2. Step 2: Convert to fraction form
   1,482.88/2,046.55 = 861.88/x
3. Step 3: Cross multiply
   1,482.88x = 2,046.55 × 861.88
4. Step 4: Simplify right side
   1,482.88x = 1,763,870.28
5. Step 5: Solve for x
   x = 1,763,870.28/1,482.88
6. Step 6: Final answer
   x = 1,189.49