Finding the Fourth Proportional to 1,155.82, 1,595.06 and 631.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.82 : 1,595.06 = 631.89 : x
2. Step 2: Convert to fraction form
   1,155.82/1,595.06 = 631.89/x
3. Step 3: Cross multiply
   1,155.82x = 1,595.06 × 631.89
4. Step 4: Simplify right side
   1,155.82x = 1,007,902.46
5. Step 5: Solve for x
   x = 1,007,902.46/1,155.82
6. Step 6: Final answer
   x = 872.02