Finding the Fourth Proportional to 1,947.43, 2,687.69 and 1,108.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.43 : 2,687.69 = 1,108.27 : x
2. Step 2: Convert to fraction form
   1,947.43/2,687.69 = 1,108.27/x
3. Step 3: Cross multiply
   1,947.43x = 2,687.69 × 1,108.27
4. Step 4: Simplify right side
   1,947.43x = 2,978,686.20
5. Step 5: Solve for x
   x = 2,978,686.20/1,947.43
6. Step 6: Final answer
   x = 1,529.55