Finding the Fourth Proportional to 3,616.78, 4,991.53 and 2,200.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,616.78 : 4,991.53 = 2,200.57 : x
2. Step 2: Convert to fraction form
   3,616.78/4,991.53 = 2,200.57/x
3. Step 3: Cross multiply
   3,616.78x = 4,991.53 × 2,200.57
4. Step 4: Simplify right side
   3,616.78x = 10,984,187.69
5. Step 5: Solve for x
   x = 10,984,187.69/3,616.78
6. Step 6: Final answer
   x = 3,037.01