Finding the Fourth Proportional to 2,013.52, 2,758.49 and 1,939.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.52 : 2,758.49 = 1,939.72 : x
2. Step 2: Convert to fraction form
   2,013.52/2,758.49 = 1,939.72/x
3. Step 3: Cross multiply
   2,013.52x = 2,758.49 × 1,939.72
4. Step 4: Simplify right side
   2,013.52x = 5,350,698.22
5. Step 5: Solve for x
   x = 5,350,698.22/2,013.52
6. Step 6: Final answer
   x = 2,657.39