Finding the Fourth Proportional to 2,631.24, 3,945.03 and 1,331.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.24 : 3,945.03 = 1,331.82 : x
2. Step 2: Convert to fraction form
   2,631.24/3,945.03 = 1,331.82/x
3. Step 3: Cross multiply
   2,631.24x = 3,945.03 × 1,331.82
4. Step 4: Simplify right side
   2,631.24x = 5,254,069.85
5. Step 5: Solve for x
   x = 5,254,069.85/2,631.24
6. Step 6: Final answer
   x = 1,996.80