Finding the Fourth Proportional to 2,078.48, 2,868.31 and 1,292.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.48 : 2,868.31 = 1,292.54 : x
2. Step 2: Convert to fraction form
   2,078.48/2,868.31 = 1,292.54/x
3. Step 3: Cross multiply
   2,078.48x = 2,868.31 × 1,292.54
4. Step 4: Simplify right side
   2,078.48x = 3,707,387.83
5. Step 5: Solve for x
   x = 3,707,387.83/2,078.48
6. Step 6: Final answer
   x = 1,783.70