Finding the Fourth Proportional to 3,560.42, 5,345.49 and 2,391.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,560.42 : 5,345.49 = 2,391.18 : x
2. Step 2: Convert to fraction form
   3,560.42/5,345.49 = 2,391.18/x
3. Step 3: Cross multiply
   3,560.42x = 5,345.49 × 2,391.18
4. Step 4: Simplify right side
   3,560.42x = 12,782,016.82
5. Step 5: Solve for x
   x = 12,782,016.82/3,560.42
6. Step 6: Final answer
   x = 3,590.04