Finding the Fourth Proportional to 2,258.74, 3,384.85 and 1,282.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.74 : 3,384.85 = 1,282.78 : x
2. Step 2: Convert to fraction form
   2,258.74/3,384.85 = 1,282.78/x
3. Step 3: Cross multiply
   2,258.74x = 3,384.85 × 1,282.78
4. Step 4: Simplify right side
   2,258.74x = 4,342,017.88
5. Step 5: Solve for x
   x = 4,342,017.88/2,258.74
6. Step 6: Final answer
   x = 1,922.32