Finding the Fourth Proportional to 2,488.47, 3,734.33 and 1,257.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.47 : 3,734.33 = 1,257.27 : x
2. Step 2: Convert to fraction form
   2,488.47/3,734.33 = 1,257.27/x
3. Step 3: Cross multiply
   2,488.47x = 3,734.33 × 1,257.27
4. Step 4: Simplify right side
   2,488.47x = 4,695,054.79
5. Step 5: Solve for x
   x = 4,695,054.79/2,488.47
6. Step 6: Final answer
   x = 1,886.72