Finding the Fourth Proportional to 2,112.96, 3,168.66 and 726.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.96 : 3,168.66 = 726.03 : x
2. Step 2: Convert to fraction form
   2,112.96/3,168.66 = 726.03/x
3. Step 3: Cross multiply
   2,112.96x = 3,168.66 × 726.03
4. Step 4: Simplify right side
   2,112.96x = 2,300,542.22
5. Step 5: Solve for x
   x = 2,300,542.22/2,112.96
6. Step 6: Final answer
   x = 1,088.78