Finding the Fourth Proportional to 1,768.62, 2,440.78 and 1,022.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.62 : 2,440.78 = 1,022.54 : x
2. Step 2: Convert to fraction form
   1,768.62/2,440.78 = 1,022.54/x
3. Step 3: Cross multiply
   1,768.62x = 2,440.78 × 1,022.54
4. Step 4: Simplify right side
   1,768.62x = 2,495,789.61
5. Step 5: Solve for x
   x = 2,495,789.61/1,768.62
6. Step 6: Final answer
   x = 1,411.15