Finding the Fourth Proportional to 2,243.50, 3,366.16 and 857.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,243.50 : 3,366.16 = 857.18 : x
2. Step 2: Convert to fraction form
   2,243.50/3,366.16 = 857.18/x
3. Step 3: Cross multiply
   2,243.50x = 3,366.16 × 857.18
4. Step 4: Simplify right side
   2,243.50x = 2,885,411.30
5. Step 5: Solve for x
   x = 2,885,411.30/2,243.50
6. Step 6: Final answer
   x = 1,286.12