Finding the Fourth Proportional to 2,222.76, 3,333.98 and 579.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.76 : 3,333.98 = 579.25 : x
2. Step 2: Convert to fraction form
   2,222.76/3,333.98 = 579.25/x
3. Step 3: Cross multiply
   2,222.76x = 3,333.98 × 579.25
4. Step 4: Simplify right side
   2,222.76x = 1,931,210.27
5. Step 5: Solve for x
   x = 1,931,210.27/2,222.76
6. Step 6: Final answer
   x = 868.84