Finding the Fourth Proportional to 2,018.78, 3,022.77 and 1,185.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.78 : 3,022.77 = 1,185.15 : x
2. Step 2: Convert to fraction form
   2,018.78/3,022.77 = 1,185.15/x
3. Step 3: Cross multiply
   2,018.78x = 3,022.77 × 1,185.15
4. Step 4: Simplify right side
   2,018.78x = 3,582,435.87
5. Step 5: Solve for x
   x = 3,582,435.87/2,018.78
6. Step 6: Final answer
   x = 1,774.56