Finding the Fourth Proportional to 2,168.79, 3,253.31 and 936.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.79 : 3,253.31 = 936.15 : x
2. Step 2: Convert to fraction form
   2,168.79/3,253.31 = 936.15/x
3. Step 3: Cross multiply
   2,168.79x = 3,253.31 × 936.15
4. Step 4: Simplify right side
   2,168.79x = 3,045,581.48
5. Step 5: Solve for x
   x = 3,045,581.48/2,168.79
6. Step 6: Final answer
   x = 1,404.28