Finding the Fourth Proportional to 2,200.47, 3,036.77 and 1,205.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.47 : 3,036.77 = 1,205.85 : x
2. Step 2: Convert to fraction form
   2,200.47/3,036.77 = 1,205.85/x
3. Step 3: Cross multiply
   2,200.47x = 3,036.77 × 1,205.85
4. Step 4: Simplify right side
   2,200.47x = 3,661,889.10
5. Step 5: Solve for x
   x = 3,661,889.10/2,200.47
6. Step 6: Final answer
   x = 1,664.14