Finding the Fourth Proportional to 1,839.82, 2,759.85 and 685.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.82 : 2,759.85 = 685.18 : x
2. Step 2: Convert to fraction form
   1,839.82/2,759.85 = 685.18/x
3. Step 3: Cross multiply
   1,839.82x = 2,759.85 × 685.18
4. Step 4: Simplify right side
   1,839.82x = 1,890,994.02
5. Step 5: Solve for x
   x = 1,890,994.02/1,839.82
6. Step 6: Final answer
   x = 1,027.81