Finding the Fourth Proportional to 2,816.01, 4,224.42 and 868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.01 : 4,224.42 = 868.50 : x
2. Step 2: Convert to fraction form
   2,816.01/4,224.42 = 868.50/x
3. Step 3: Cross multiply
   2,816.01x = 4,224.42 × 868.50
4. Step 4: Simplify right side
   2,816.01x = 3,668,908.77
5. Step 5: Solve for x
   x = 3,668,908.77/2,816.01
6. Step 6: Final answer
   x = 1,302.87