Finding the Fourth Proportional to 1,162.73, 1,604.56 and 631.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.73 : 1,604.56 = 631.61 : x
2. Step 2: Convert to fraction form
   1,162.73/1,604.56 = 631.61/x
3. Step 3: Cross multiply
   1,162.73x = 1,604.56 × 631.61
4. Step 4: Simplify right side
   1,162.73x = 1,013,453.71
5. Step 5: Solve for x
   x = 1,013,453.71/1,162.73
6. Step 6: Final answer
   x = 871.62