Finding the Fourth Proportional to 2,200.40, 3,036.54 and 1,205.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.40 : 3,036.54 = 1,205.68 : x
2. Step 2: Convert to fraction form
   2,200.40/3,036.54 = 1,205.68/x
3. Step 3: Cross multiply
   2,200.40x = 3,036.54 × 1,205.68
4. Step 4: Simplify right side
   2,200.40x = 3,661,095.55
5. Step 5: Solve for x
   x = 3,661,095.55/2,200.40
6. Step 6: Final answer
   x = 1,663.83