Finding the Fourth Proportional to 1,615.50, 2,229.42 and 1,144.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.50 : 2,229.42 = 1,144.22 : x
2. Step 2: Convert to fraction form
   1,615.50/2,229.42 = 1,144.22/x
3. Step 3: Cross multiply
   1,615.50x = 2,229.42 × 1,144.22
4. Step 4: Simplify right side
   1,615.50x = 2,550,946.95
5. Step 5: Solve for x
   x = 2,550,946.95/1,615.50
6. Step 6: Final answer
   x = 1,579.04