Finding the Fourth Proportional to 2,028.27, 3,043.61 and 858.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,028.27 : 3,043.61 = 858.21 : x
2. Step 2: Convert to fraction form
   2,028.27/3,043.61 = 858.21/x
3. Step 3: Cross multiply
   2,028.27x = 3,043.61 × 858.21
4. Step 4: Simplify right side
   2,028.27x = 2,612,052.25
5. Step 5: Solve for x
   x = 2,612,052.25/2,028.27
6. Step 6: Final answer
   x = 1,287.82