Finding the Fourth Proportional to 2,018.31, 3,028.32 and 848.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.31 : 3,028.32 = 848.61 : x
2. Step 2: Convert to fraction form
   2,018.31/3,028.32 = 848.61/x
3. Step 3: Cross multiply
   2,018.31x = 3,028.32 × 848.61
4. Step 4: Simplify right side
   2,018.31x = 2,569,862.64
5. Step 5: Solve for x
   x = 2,569,862.64/2,018.31
6. Step 6: Final answer
   x = 1,273.27