Finding the Fourth Proportional to 2,111.69, 3,167.37 and 724.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.69 : 3,167.37 = 724.97 : x
2. Step 2: Convert to fraction form
   2,111.69/3,167.37 = 724.97/x
3. Step 3: Cross multiply
   2,111.69x = 3,167.37 × 724.97
4. Step 4: Simplify right side
   2,111.69x = 2,296,232.39
5. Step 5: Solve for x
   x = 2,296,232.39/2,111.69
6. Step 6: Final answer
   x = 1,087.39