Finding the Fourth Proportional to 2,111.43, 3,167.19 and 724.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.43 : 3,167.19 = 724.76 : x
2. Step 2: Convert to fraction form
   2,111.43/3,167.19 = 724.76/x
3. Step 3: Cross multiply
   2,111.43x = 3,167.19 × 724.76
4. Step 4: Simplify right side
   2,111.43x = 2,295,436.79
5. Step 5: Solve for x
   x = 2,295,436.79/2,111.43
6. Step 6: Final answer
   x = 1,087.15