Finding the Fourth Proportional to 2,205.36, 3,042.72 and 1,366.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.36 : 3,042.72 = 1,366.20 : x
2. Step 2: Convert to fraction form
   2,205.36/3,042.72 = 1,366.20/x
3. Step 3: Cross multiply
   2,205.36x = 3,042.72 × 1,366.20
4. Step 4: Simplify right side
   2,205.36x = 4,156,964.06
5. Step 5: Solve for x
   x = 4,156,964.06/2,205.36
6. Step 6: Final answer
   x = 1,884.94