Finding the Fourth Proportional to 1,615.83, 2,230.89 and 1,019.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.83 : 2,230.89 = 1,019.16 : x
2. Step 2: Convert to fraction form
   1,615.83/2,230.89 = 1,019.16/x
3. Step 3: Cross multiply
   1,615.83x = 2,230.89 × 1,019.16
4. Step 4: Simplify right side
   1,615.83x = 2,273,633.85
5. Step 5: Solve for x
   x = 2,273,633.85/1,615.83
6. Step 6: Final answer
   x = 1,407.10