Finding the Fourth Proportional to 2,018.39, 3,022.82 and 1,138.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.39 : 3,022.82 = 1,138.73 : x
2. Step 2: Convert to fraction form
   2,018.39/3,022.82 = 1,138.73/x
3. Step 3: Cross multiply
   2,018.39x = 3,022.82 × 1,138.73
4. Step 4: Simplify right side
   2,018.39x = 3,442,170.12
5. Step 5: Solve for x
   x = 3,442,170.12/2,018.39
6. Step 6: Final answer
   x = 1,705.40