Finding the Fourth Proportional to 1,155.67, 1,594.82 and 631.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.67 : 1,594.82 = 631.69 : x
2. Step 2: Convert to fraction form
   1,155.67/1,594.82 = 631.69/x
3. Step 3: Cross multiply
   1,155.67x = 1,594.82 × 631.69
4. Step 4: Simplify right side
   1,155.67x = 1,007,429.44
5. Step 5: Solve for x
   x = 1,007,429.44/1,155.67
6. Step 6: Final answer
   x = 871.73