Finding the Fourth Proportional to 2,205.55, 3,043.88 and 1,261.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.55 : 3,043.88 = 1,261.42 : x
2. Step 2: Convert to fraction form
   2,205.55/3,043.88 = 1,261.42/x
3. Step 3: Cross multiply
   2,205.55x = 3,043.88 × 1,261.42
4. Step 4: Simplify right side
   2,205.55x = 3,839,619.04
5. Step 5: Solve for x
   x = 3,839,619.04/2,205.55
6. Step 6: Final answer
   x = 1,740.89