Finding the Fourth Proportional to 2,672.75, 3,687.56 and 1,553.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.75 : 3,687.56 = 1,553.48 : x
2. Step 2: Convert to fraction form
   2,672.75/3,687.56 = 1,553.48/x
3. Step 3: Cross multiply
   2,672.75x = 3,687.56 × 1,553.48
4. Step 4: Simplify right side
   2,672.75x = 5,728,532.27
5. Step 5: Solve for x
   x = 5,728,532.27/2,672.75
6. Step 6: Final answer
   x = 2,143.31