Finding the Fourth Proportional to 1,608.02, 2,218.71 and 1,019.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.02 : 2,218.71 = 1,019.30 : x
2. Step 2: Convert to fraction form
   1,608.02/2,218.71 = 1,019.30/x
3. Step 3: Cross multiply
   1,608.02x = 2,218.71 × 1,019.30
4. Step 4: Simplify right side
   1,608.02x = 2,261,531.10
5. Step 5: Solve for x
   x = 2,261,531.10/1,608.02
6. Step 6: Final answer
   x = 1,406.41