Finding the Fourth Proportional to 1,162.68, 1,604.50 and 631.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.68 : 1,604.50 = 631.57 : x
2. Step 2: Convert to fraction form
   1,162.68/1,604.50 = 631.57/x
3. Step 3: Cross multiply
   1,162.68x = 1,604.50 × 631.57
4. Step 4: Simplify right side
   1,162.68x = 1,013,357.77
5. Step 5: Solve for x
   x = 1,013,357.77/1,162.68
6. Step 6: Final answer
   x = 871.57