Finding the Fourth Proportional to 2,168.36, 2,989.86 and 1,726.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.36 : 2,989.86 = 1,726.28 : x
2. Step 2: Convert to fraction form
   2,168.36/2,989.86 = 1,726.28/x
3. Step 3: Cross multiply
   2,168.36x = 2,989.86 × 1,726.28
4. Step 4: Simplify right side
   2,168.36x = 5,161,335.52
5. Step 5: Solve for x
   x = 5,161,335.52/2,168.36
6. Step 6: Final answer
   x = 2,380.29