Finding the Fourth Proportional to 1,223.42, 1,824.24 and 1,208.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.42 : 1,824.24 = 1,208.30 : x
2. Step 2: Convert to fraction form
   1,223.42/1,824.24 = 1,208.30/x
3. Step 3: Cross multiply
   1,223.42x = 1,824.24 × 1,208.30
4. Step 4: Simplify right side
   1,223.42x = 2,204,223.15
5. Step 5: Solve for x
   x = 2,204,223.15/1,223.42
6. Step 6: Final answer
   x = 1,801.69