Finding the Fourth Proportional to 1,686.74, 2,327.72 and 940.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.74 : 2,327.72 = 940.70 : x
2. Step 2: Convert to fraction form
   1,686.74/2,327.72 = 940.70/x
3. Step 3: Cross multiply
   1,686.74x = 2,327.72 × 940.70
4. Step 4: Simplify right side
   1,686.74x = 2,189,669.86
5. Step 5: Solve for x
   x = 2,189,669.86/1,686.74
6. Step 6: Final answer
   x = 1,298.17