Finding the Fourth Proportional to 3,072.88, 4,608.42 and 1,223.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,072.88 : 4,608.42 = 1,223.38 : x
2. Step 2: Convert to fraction form
   3,072.88/4,608.42 = 1,223.38/x
3. Step 3: Cross multiply
   3,072.88x = 4,608.42 × 1,223.38
4. Step 4: Simplify right side
   3,072.88x = 5,637,848.86
5. Step 5: Solve for x
   x = 5,637,848.86/3,072.88
6. Step 6: Final answer
   x = 1,834.71