Finding the Fourth Proportional to 2,168.97, 3,255.59 and 936.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.97 : 3,255.59 = 936.81 : x
2. Step 2: Convert to fraction form
   2,168.97/3,255.59 = 936.81/x
3. Step 3: Cross multiply
   2,168.97x = 3,255.59 × 936.81
4. Step 4: Simplify right side
   2,168.97x = 3,049,864.58
5. Step 5: Solve for x
   x = 3,049,864.58/2,168.97
6. Step 6: Final answer
   x = 1,406.13