Finding the Fourth Proportional to 2,182.88, 3,272.27 and 721.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.88 : 3,272.27 = 721.24 : x
2. Step 2: Convert to fraction form
   2,182.88/3,272.27 = 721.24/x
3. Step 3: Cross multiply
   2,182.88x = 3,272.27 × 721.24
4. Step 4: Simplify right side
   2,182.88x = 2,360,085.64
5. Step 5: Solve for x
   x = 2,360,085.64/2,182.88
6. Step 6: Final answer
   x = 1,081.18