Finding the Fourth Proportional to 2,747.76, 3,791.90 and 1,488.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,747.76 : 3,791.90 = 1,488.78 : x
2. Step 2: Convert to fraction form
   2,747.76/3,791.90 = 1,488.78/x
3. Step 3: Cross multiply
   2,747.76x = 3,791.90 × 1,488.78
4. Step 4: Simplify right side
   2,747.76x = 5,645,297.44
5. Step 5: Solve for x
   x = 5,645,297.44/2,747.76
6. Step 6: Final answer
   x = 2,054.51