Finding the Fourth Proportional to 2,868.17, 4,301.71 and 1,019.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.17 : 4,301.71 = 1,019.21 : x
2. Step 2: Convert to fraction form
   2,868.17/4,301.71 = 1,019.21/x
3. Step 3: Cross multiply
   2,868.17x = 4,301.71 × 1,019.21
4. Step 4: Simplify right side
   2,868.17x = 4,384,345.85
5. Step 5: Solve for x
   x = 4,384,345.85/2,868.17
6. Step 6: Final answer
   x = 1,528.62