Finding the Fourth Proportional to 1,155.45, 1,594.53 and 631.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.45 : 1,594.53 = 631.49 : x
2. Step 2: Convert to fraction form
   1,155.45/1,594.53 = 631.49/x
3. Step 3: Cross multiply
   1,155.45x = 1,594.53 × 631.49
4. Step 4: Simplify right side
   1,155.45x = 1,006,926.59
5. Step 5: Solve for x
   x = 1,006,926.59/1,155.45
6. Step 6: Final answer
   x = 871.46