Finding the Fourth Proportional to 1,178.82, 1,626.82 and 681.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.82 : 1,626.82 = 681.48 : x
2. Step 2: Convert to fraction form
   1,178.82/1,626.82 = 681.48/x
3. Step 3: Cross multiply
   1,178.82x = 1,626.82 × 681.48
4. Step 4: Simplify right side
   1,178.82x = 1,108,643.59
5. Step 5: Solve for x
   x = 1,108,643.59/1,178.82
6. Step 6: Final answer
   x = 940.47