Finding the Fourth Proportional to 1,608.63, 2,220.42 and 1,019.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.63 : 2,220.42 = 1,019.53 : x
2. Step 2: Convert to fraction form
   1,608.63/2,220.42 = 1,019.53/x
3. Step 3: Cross multiply
   1,608.63x = 2,220.42 × 1,019.53
4. Step 4: Simplify right side
   1,608.63x = 2,263,784.80
5. Step 5: Solve for x
   x = 2,263,784.80/1,608.63
6. Step 6: Final answer
   x = 1,407.28