Finding the Fourth Proportional to 2,200.80, 3,037.09 and 1,206.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.80 : 3,037.09 = 1,206.15 : x
2. Step 2: Convert to fraction form
   2,200.80/3,037.09 = 1,206.15/x
3. Step 3: Cross multiply
   2,200.80x = 3,037.09 × 1,206.15
4. Step 4: Simplify right side
   2,200.80x = 3,663,186.10
5. Step 5: Solve for x
   x = 3,663,186.10/2,200.80
6. Step 6: Final answer
   x = 1,664.48