Finding the Fourth Proportional to 2,223.54, 3,334.50 and 989.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.54 : 3,334.50 = 989.73 : x
2. Step 2: Convert to fraction form
   2,223.54/3,334.50 = 989.73/x
3. Step 3: Cross multiply
   2,223.54x = 3,334.50 × 989.73
4. Step 4: Simplify right side
   2,223.54x = 3,300,254.69
5. Step 5: Solve for x
   x = 3,300,254.69/2,223.54
6. Step 6: Final answer
   x = 1,484.23