Finding the Fourth Proportional to 2,631.54, 3,631.09 and 1,512.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.54 : 3,631.09 = 1,512.31 : x
2. Step 2: Convert to fraction form
   2,631.54/3,631.09 = 1,512.31/x
3. Step 3: Cross multiply
   2,631.54x = 3,631.09 × 1,512.31
4. Step 4: Simplify right side
   2,631.54x = 5,491,333.72
5. Step 5: Solve for x
   x = 5,491,333.72/2,631.54
6. Step 6: Final answer
   x = 2,086.74