Finding the Fourth Proportional to 1,686.30, 2,327.27 and 940.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.30 : 2,327.27 = 940.38 : x
2. Step 2: Convert to fraction form
   1,686.30/2,327.27 = 940.38/x
3. Step 3: Cross multiply
   1,686.30x = 2,327.27 × 940.38
4. Step 4: Simplify right side
   1,686.30x = 2,188,518.16
5. Step 5: Solve for x
   x = 2,188,518.16/1,686.30
6. Step 6: Final answer
   x = 1,297.82