Finding the Fourth Proportional to 2,394.72, 3,589.89 and 855.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,394.72 : 3,589.89 = 855.36 : x
2. Step 2: Convert to fraction form
   2,394.72/3,589.89 = 855.36/x
3. Step 3: Cross multiply
   2,394.72x = 3,589.89 × 855.36
4. Step 4: Simplify right side
   2,394.72x = 3,070,648.31
5. Step 5: Solve for x
   x = 3,070,648.31/2,394.72
6. Step 6: Final answer
   x = 1,282.26