Finding the Fourth Proportional to 1,223.69, 1,833.14 and 674.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.69 : 1,833.14 = 674.21 : x
2. Step 2: Convert to fraction form
   1,223.69/1,833.14 = 674.21/x
3. Step 3: Cross multiply
   1,223.69x = 1,833.14 × 674.21
4. Step 4: Simplify right side
   1,223.69x = 1,235,908.78
5. Step 5: Solve for x
   x = 1,235,908.78/1,223.69
6. Step 6: Final answer
   x = 1,009.99