Finding the Fourth Proportional to 2,048.78, 3,069.39 and 1,587.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.78 : 3,069.39 = 1,587.08 : x
2. Step 2: Convert to fraction form
   2,048.78/3,069.39 = 1,587.08/x
3. Step 3: Cross multiply
   2,048.78x = 3,069.39 × 1,587.08
4. Step 4: Simplify right side
   2,048.78x = 4,871,367.48
5. Step 5: Solve for x
   x = 4,871,367.48/2,048.78
6. Step 6: Final answer
   x = 2,377.69