Finding the Fourth Proportional to 2,112.99, 3,168.63 and 726.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.99 : 3,168.63 = 726.06 : x
2. Step 2: Convert to fraction form
   2,112.99/3,168.63 = 726.06/x
3. Step 3: Cross multiply
   2,112.99x = 3,168.63 × 726.06
4. Step 4: Simplify right side
   2,112.99x = 2,300,615.50
5. Step 5: Solve for x
   x = 2,300,615.50/2,112.99
6. Step 6: Final answer
   x = 1,088.80