Finding the Fourth Proportional to 2,111.22, 3,167.46 and 724.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.22 : 3,167.46 = 724.68 : x
2. Step 2: Convert to fraction form
   2,111.22/3,167.46 = 724.68/x
3. Step 3: Cross multiply
   2,111.22x = 3,167.46 × 724.68
4. Step 4: Simplify right side
   2,111.22x = 2,295,394.91
5. Step 5: Solve for x
   x = 2,295,394.91/2,111.22
6. Step 6: Final answer
   x = 1,087.24