Finding the Fourth Proportional to 1,687.82, 2,527.40 and 1,167.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687.82 : 2,527.40 = 1,167.10 : x
2. Step 2: Convert to fraction form
   1,687.82/2,527.40 = 1,167.10/x
3. Step 3: Cross multiply
   1,687.82x = 2,527.40 × 1,167.10
4. Step 4: Simplify right side
   1,687.82x = 2,949,723.31
5. Step 5: Solve for x
   x = 2,949,723.31/1,687.82
6. Step 6: Final answer
   x = 1,747.66