Finding the Fourth Proportional to 2,109.43, 3,163.33 and 722.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.43 : 3,163.33 = 722.31 : x
2. Step 2: Convert to fraction form
   2,109.43/3,163.33 = 722.31/x
3. Step 3: Cross multiply
   2,109.43x = 3,163.33 × 722.31
4. Step 4: Simplify right side
   2,109.43x = 2,284,904.89
5. Step 5: Solve for x
   x = 2,284,904.89/2,109.43
6. Step 6: Final answer
   x = 1,083.19