Finding the Fourth Proportional to 1,947.80, 2,687.98 and 1,108.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.80 : 2,687.98 = 1,108.57 : x
2. Step 2: Convert to fraction form
   1,947.80/2,687.98 = 1,108.57/x
3. Step 3: Cross multiply
   1,947.80x = 2,687.98 × 1,108.57
4. Step 4: Simplify right side
   1,947.80x = 2,979,805.17
5. Step 5: Solve for x
   x = 2,979,805.17/1,947.80
6. Step 6: Final answer
   x = 1,529.83