Finding the Fourth Proportional to 1,155.41, 1,594.46 and 631.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.41 : 1,594.46 = 631.47 : x
2. Step 2: Convert to fraction form
   1,155.41/1,594.46 = 631.47/x
3. Step 3: Cross multiply
   1,155.41x = 1,594.46 × 631.47
4. Step 4: Simplify right side
   1,155.41x = 1,006,850.50
5. Step 5: Solve for x
   x = 1,006,850.50/1,155.41
6. Step 6: Final answer
   x = 871.43