Finding the Fourth Proportional to 2,223.57, 3,334.83 and 663.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.57 : 3,334.83 = 663.43 : x
2. Step 2: Convert to fraction form
   2,223.57/3,334.83 = 663.43/x
3. Step 3: Cross multiply
   2,223.57x = 3,334.83 × 663.43
4. Step 4: Simplify right side
   2,223.57x = 2,212,426.27
5. Step 5: Solve for x
   x = 2,212,426.27/2,223.57
6. Step 6: Final answer
   x = 994.99