Finding the Fourth Proportional to 2,185.15, 3,269.12 and 1,687.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.15 : 3,269.12 = 1,687.69 : x
2. Step 2: Convert to fraction form
   2,185.15/3,269.12 = 1,687.69/x
3. Step 3: Cross multiply
   2,185.15x = 3,269.12 × 1,687.69
4. Step 4: Simplify right side
   2,185.15x = 5,517,261.13
5. Step 5: Solve for x
   x = 5,517,261.13/2,185.15
6. Step 6: Final answer
   x = 2,524.89