Finding the Fourth Proportional to 1,150.24, 1,723.19 and 680.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.24 : 1,723.19 = 680.31 : x
2. Step 2: Convert to fraction form
   1,150.24/1,723.19 = 680.31/x
3. Step 3: Cross multiply
   1,150.24x = 1,723.19 × 680.31
4. Step 4: Simplify right side
   1,150.24x = 1,172,303.81
5. Step 5: Solve for x
   x = 1,172,303.81/1,150.24
6. Step 6: Final answer
   x = 1,019.18