Finding the Fourth Proportional to 1,686.75, 2,327.55 and 940.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.75 : 2,327.55 = 940.69 : x
2. Step 2: Convert to fraction form
   1,686.75/2,327.55 = 940.69/x
3. Step 3: Cross multiply
   1,686.75x = 2,327.55 × 940.69
4. Step 4: Simplify right side
   1,686.75x = 2,189,503.01
5. Step 5: Solve for x
   x = 2,189,503.01/1,686.75
6. Step 6: Final answer
   x = 1,298.06