Finding the Fourth Proportional to 2,640.72, 3,644.16 and 1,461.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640.72 : 3,644.16 = 1,461.87 : x
2. Step 2: Convert to fraction form
   2,640.72/3,644.16 = 1,461.87/x
3. Step 3: Cross multiply
   2,640.72x = 3,644.16 × 1,461.87
4. Step 4: Simplify right side
   2,640.72x = 5,327,288.18
5. Step 5: Solve for x
   x = 5,327,288.18/2,640.72
6. Step 6: Final answer
   x = 2,017.36