Finding the Fourth Proportional to 1,103.73, 1,523.48 and 631.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.73 : 1,523.48 = 631.89 : x
2. Step 2: Convert to fraction form
   1,103.73/1,523.48 = 631.89/x
3. Step 3: Cross multiply
   1,103.73x = 1,523.48 × 631.89
4. Step 4: Simplify right side
   1,103.73x = 962,668.62
5. Step 5: Solve for x
   x = 962,668.62/1,103.73
6. Step 6: Final answer
   x = 872.20