Finding the Fourth Proportional to 1,947.24, 2,687.38 and 1,108.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.24 : 2,687.38 = 1,108.15 : x
2. Step 2: Convert to fraction form
   1,947.24/2,687.38 = 1,108.15/x
3. Step 3: Cross multiply
   1,947.24x = 2,687.38 × 1,108.15
4. Step 4: Simplify right side
   1,947.24x = 2,978,010.66
5. Step 5: Solve for x
   x = 2,978,010.66/1,947.24
6. Step 6: Final answer
   x = 1,529.35