Finding the Fourth Proportional to 2,399.86, 3,600.66 and 1,013.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.86 : 3,600.66 = 1,013.54 : x
2. Step 2: Convert to fraction form
   2,399.86/3,600.66 = 1,013.54/x
3. Step 3: Cross multiply
   2,399.86x = 3,600.66 × 1,013.54
4. Step 4: Simplify right side
   2,399.86x = 3,649,412.94
5. Step 5: Solve for x
   x = 3,649,412.94/2,399.86
6. Step 6: Final answer
   x = 1,520.68