Finding the Fourth Proportional to 2,018.39, 3,028.05 and 847.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.39 : 3,028.05 = 847.73 : x
2. Step 2: Convert to fraction form
   2,018.39/3,028.05 = 847.73/x
3. Step 3: Cross multiply
   2,018.39x = 3,028.05 × 847.73
4. Step 4: Simplify right side
   2,018.39x = 2,566,968.83
5. Step 5: Solve for x
   x = 2,566,968.83/2,018.39
6. Step 6: Final answer
   x = 1,271.79