Finding the Fourth Proportional to 2,017.91, 3,025.96 and 719.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.91 : 3,025.96 = 719.42 : x
2. Step 2: Convert to fraction form
   2,017.91/3,025.96 = 719.42/x
3. Step 3: Cross multiply
   2,017.91x = 3,025.96 × 719.42
4. Step 4: Simplify right side
   2,017.91x = 2,176,919.21
5. Step 5: Solve for x
   x = 2,176,919.21/2,017.91
6. Step 6: Final answer
   x = 1,078.80