Finding the Fourth Proportional to 2,631.72, 3,631.36 and 1,512.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.72 : 3,631.36 = 1,512.70 : x
2. Step 2: Convert to fraction form
   2,631.72/3,631.36 = 1,512.70/x
3. Step 3: Cross multiply
   2,631.72x = 3,631.36 × 1,512.70
4. Step 4: Simplify right side
   2,631.72x = 5,493,158.27
5. Step 5: Solve for x
   x = 5,493,158.27/2,631.72
6. Step 6: Final answer
   x = 2,087.29