Finding the Fourth Proportional to 2,730.78, 3,768.42 and 1,488.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730.78 : 3,768.42 = 1,488.78 : x
2. Step 2: Convert to fraction form
   2,730.78/3,768.42 = 1,488.78/x
3. Step 3: Cross multiply
   2,730.78x = 3,768.42 × 1,488.78
4. Step 4: Simplify right side
   2,730.78x = 5,610,348.33
5. Step 5: Solve for x
   x = 5,610,348.33/2,730.78
6. Step 6: Final answer
   x = 2,054.49