Finding the Fourth Proportional to 1,099.99, 1,517.01 and 680.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.99 : 1,517.01 = 680.27 : x
2. Step 2: Convert to fraction form
   1,099.99/1,517.01 = 680.27/x
3. Step 3: Cross multiply
   1,099.99x = 1,517.01 × 680.27
4. Step 4: Simplify right side
   1,099.99x = 1,031,976.39
5. Step 5: Solve for x
   x = 1,031,976.39/1,099.99
6. Step 6: Final answer
   x = 938.17