Finding the Fourth Proportional to 2,979.34, 4,469.50 and 1,223.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.34 : 4,469.50 = 1,223.88 : x
2. Step 2: Convert to fraction form
   2,979.34/4,469.50 = 1,223.88/x
3. Step 3: Cross multiply
   2,979.34x = 4,469.50 × 1,223.88
4. Step 4: Simplify right side
   2,979.34x = 5,470,131.66
5. Step 5: Solve for x
   x = 5,470,131.66/2,979.34
6. Step 6: Final answer
   x = 1,836.02