Finding the Fourth Proportional to 2,089.80, 3,133.78 and 1,049.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.80 : 3,133.78 = 1,049.40 : x
2. Step 2: Convert to fraction form
   2,089.80/3,133.78 = 1,049.40/x
3. Step 3: Cross multiply
   2,089.80x = 3,133.78 × 1,049.40
4. Step 4: Simplify right side
   2,089.80x = 3,288,588.73
5. Step 5: Solve for x
   x = 3,288,588.73/2,089.80
6. Step 6: Final answer
   x = 1,573.64