Finding the Fourth Proportional to 1,686.58, 2,327.24 and 940.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.58 : 2,327.24 = 940.43 : x
2. Step 2: Convert to fraction form
   1,686.58/2,327.24 = 940.43/x
3. Step 3: Cross multiply
   1,686.58x = 2,327.24 × 940.43
4. Step 4: Simplify right side
   1,686.58x = 2,188,614.48
5. Step 5: Solve for x
   x = 2,188,614.48/1,686.58
6. Step 6: Final answer
   x = 1,297.66