Finding the Fourth Proportional to 2,600.78, 3,605.58 and 2,460.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.78 : 3,605.58 = 2,460.52 : x
2. Step 2: Convert to fraction form
   2,600.78/3,605.58 = 2,460.52/x
3. Step 3: Cross multiply
   2,600.78x = 3,605.58 × 2,460.52
4. Step 4: Simplify right side
   2,600.78x = 8,871,571.37
5. Step 5: Solve for x
   x = 8,871,571.37/2,600.78
6. Step 6: Final answer
   x = 3,411.12