Finding the Fourth Proportional to 2,685.12, 3,685.69 and 2,383.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.12 : 3,685.69 = 2,383.80 : x
2. Step 2: Convert to fraction form
   2,685.12/3,685.69 = 2,383.80/x
3. Step 3: Cross multiply
   2,685.12x = 3,685.69 × 2,383.80
4. Step 4: Simplify right side
   2,685.12x = 8,785,947.82
5. Step 5: Solve for x
   x = 8,785,947.82/2,685.12
6. Step 6: Final answer
   x = 3,272.09