Finding the Fourth Proportional to 1,229.42, 1,844.43 and 613.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229.42 : 1,844.43 = 613.42 : x
2. Step 2: Convert to fraction form
   1,229.42/1,844.43 = 613.42/x
3. Step 3: Cross multiply
   1,229.42x = 1,844.43 × 613.42
4. Step 4: Simplify right side
   1,229.42x = 1,131,410.25
5. Step 5: Solve for x
   x = 1,131,410.25/1,229.42
6. Step 6: Final answer
   x = 920.28