Finding the Fourth Proportional to 1,947.01, 2,687.38 and 1,108.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.01 : 2,687.38 = 1,108.20 : x
2. Step 2: Convert to fraction form
   1,947.01/2,687.38 = 1,108.20/x
3. Step 3: Cross multiply
   1,947.01x = 2,687.38 × 1,108.20
4. Step 4: Simplify right side
   1,947.01x = 2,978,154.52
5. Step 5: Solve for x
   x = 2,978,154.52/1,947.01
6. Step 6: Final answer
   x = 1,529.60