Finding the Fourth Proportional to 1,223.30, 1,831.82 and 674.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.30 : 1,831.82 = 674.12 : x
2. Step 2: Convert to fraction form
   1,223.30/1,831.82 = 674.12/x
3. Step 3: Cross multiply
   1,223.30x = 1,831.82 × 674.12
4. Step 4: Simplify right side
   1,223.30x = 1,234,867.71
5. Step 5: Solve for x
   x = 1,234,867.71/1,223.30
6. Step 6: Final answer
   x = 1,009.45