Finding the Fourth Proportional to 2,816.67, 4,225.23 and 868.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,816.67 : 4,225.23 = 868.88 : x
2. Step 2: Convert to fraction form
   2,816.67/4,225.23 = 868.88/x
3. Step 3: Cross multiply
   2,816.67x = 4,225.23 × 868.88
4. Step 4: Simplify right side
   2,816.67x = 3,671,196.72
5. Step 5: Solve for x
   x = 3,671,196.72/2,816.67
6. Step 6: Final answer
   x = 1,303.38