Finding the Fourth Proportional to 1,223.59, 1,835.53 and 443.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.59 : 1,835.53 = 443.96 : x
2. Step 2: Convert to fraction form
   1,223.59/1,835.53 = 443.96/x
3. Step 3: Cross multiply
   1,223.59x = 1,835.53 × 443.96
4. Step 4: Simplify right side
   1,223.59x = 814,900.79
5. Step 5: Solve for x
   x = 814,900.79/1,223.59
6. Step 6: Final answer
   x = 665.99