Finding the Fourth Proportional to 2,222.13, 3,333.18 and 578.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,222.13 : 3,333.18 = 578.67 : x
2. Step 2: Convert to fraction form
   2,222.13/3,333.18 = 578.67/x
3. Step 3: Cross multiply
   2,222.13x = 3,333.18 × 578.67
4. Step 4: Simplify right side
   2,222.13x = 1,928,811.27
5. Step 5: Solve for x
   x = 1,928,811.27/2,222.13
6. Step 6: Final answer
   x = 868.00