Finding the Fourth Proportional to 1,686.03, 2,326.76 and 940.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.03 : 2,326.76 = 940.05 : x
2. Step 2: Convert to fraction form
   1,686.03/2,326.76 = 940.05/x
3. Step 3: Cross multiply
   1,686.03x = 2,326.76 × 940.05
4. Step 4: Simplify right side
   1,686.03x = 2,187,266.04
5. Step 5: Solve for x
   x = 2,187,266.04/1,686.03
6. Step 6: Final answer
   x = 1,297.29