Finding the Fourth Proportional to 2,685.25, 4,028.18 and 836.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.25 : 4,028.18 = 836.83 : x
2. Step 2: Convert to fraction form
   2,685.25/4,028.18 = 836.83/x
3. Step 3: Cross multiply
   2,685.25x = 4,028.18 × 836.83
4. Step 4: Simplify right side
   2,685.25x = 3,370,907.43
5. Step 5: Solve for x
   x = 3,370,907.43/2,685.25
6. Step 6: Final answer
   x = 1,255.34