Finding the Fourth Proportional to 1,155.69, 1,594.86 and 631.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.69 : 1,594.86 = 631.73 : x
2. Step 2: Convert to fraction form
   1,155.69/1,594.86 = 631.73/x
3. Step 3: Cross multiply
   1,155.69x = 1,594.86 × 631.73
4. Step 4: Simplify right side
   1,155.69x = 1,007,520.91
5. Step 5: Solve for x
   x = 1,007,520.91/1,155.69
6. Step 6: Final answer
   x = 871.79