Finding the Fourth Proportional to 1,350.72, 1,863 and 1,019.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.72 : 1,863 = 1,019.16 : x
2. Step 2: Convert to fraction form
   1,350.72/1,863 = 1,019.16/x
3. Step 3: Cross multiply
   1,350.72x = 1,863 × 1,019.16
4. Step 4: Simplify right side
   1,350.72x = 1,898,695.08
5. Step 5: Solve for x
   x = 1,898,695.08/1,350.72
6. Step 6: Final answer
   x = 1,405.69