Finding the Fourth Proportional to 1,686.39, 2,327.32 and 940.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.39 : 2,327.32 = 940.34 : x
2. Step 2: Convert to fraction form
   1,686.39/2,327.32 = 940.34/x
3. Step 3: Cross multiply
   1,686.39x = 2,327.32 × 940.34
4. Step 4: Simplify right side
   1,686.39x = 2,188,472.09
5. Step 5: Solve for x
   x = 2,188,472.09/1,686.39
6. Step 6: Final answer
   x = 1,297.73