Finding the Fourth Proportional to 1,947.13, 2,687.03 and 1,248.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.13 : 2,687.03 = 1,248.55 : x
2. Step 2: Convert to fraction form
   1,947.13/2,687.03 = 1,248.55/x
3. Step 3: Cross multiply
   1,947.13x = 2,687.03 × 1,248.55
4. Step 4: Simplify right side
   1,947.13x = 3,354,891.31
5. Step 5: Solve for x
   x = 3,354,891.31/1,947.13
6. Step 6: Final answer
   x = 1,722.99