Finding the Fourth Proportional to 2,612.46, 3,603.02 and 1,616.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.46 : 3,603.02 = 1,616.78 : x
2. Step 2: Convert to fraction form
   2,612.46/3,603.02 = 1,616.78/x
3. Step 3: Cross multiply
   2,612.46x = 3,603.02 × 1,616.78
4. Step 4: Simplify right side
   2,612.46x = 5,825,290.68
5. Step 5: Solve for x
   x = 5,825,290.68/2,612.46
6. Step 6: Final answer
   x = 2,229.81