Finding the Fourth Proportional to 1,162.86, 1,604.76 and 631.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.86 : 1,604.76 = 631.75 : x
2. Step 2: Convert to fraction form
   1,162.86/1,604.76 = 631.75/x
3. Step 3: Cross multiply
   1,162.86x = 1,604.76 × 631.75
4. Step 4: Simplify right side
   1,162.86x = 1,013,808.71
5. Step 5: Solve for x
   x = 1,013,808.71/1,162.86
6. Step 6: Final answer
   x = 871.82