Finding the Fourth Proportional to 2,404.54, 3,605.37 and 865.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,404.54 : 3,605.37 = 865.90 : x
2. Step 2: Convert to fraction form
   2,404.54/3,605.37 = 865.90/x
3. Step 3: Cross multiply
   2,404.54x = 3,605.37 × 865.90
4. Step 4: Simplify right side
   2,404.54x = 3,121,889.88
5. Step 5: Solve for x
   x = 3,121,889.88/2,404.54
6. Step 6: Final answer
   x = 1,298.33