Finding the Fourth Proportional to 1,686.43, 2,327.25 and 940.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.43 : 2,327.25 = 940.38 : x
2. Step 2: Convert to fraction form
   1,686.43/2,327.25 = 940.38/x
3. Step 3: Cross multiply
   1,686.43x = 2,327.25 × 940.38
4. Step 4: Simplify right side
   1,686.43x = 2,188,499.36
5. Step 5: Solve for x
   x = 2,188,499.36/1,686.43
6. Step 6: Final answer
   x = 1,297.71