Finding the Fourth Proportional to 2,337.49, 3,506.16 and 857.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,337.49 : 3,506.16 = 857.89 : x
2. Step 2: Convert to fraction form
   2,337.49/3,506.16 = 857.89/x
3. Step 3: Cross multiply
   2,337.49x = 3,506.16 × 857.89
4. Step 4: Simplify right side
   2,337.49x = 3,007,882.07
5. Step 5: Solve for x
   x = 3,007,882.07/2,337.49
6. Step 6: Final answer
   x = 1,286.80