Finding the Fourth Proportional to 2,672.16, 3,687.59 and 1,553.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.16 : 3,687.59 = 1,553.75 : x
2. Step 2: Convert to fraction form
   2,672.16/3,687.59 = 1,553.75/x
3. Step 3: Cross multiply
   2,672.16x = 3,687.59 × 1,553.75
4. Step 4: Simplify right side
   2,672.16x = 5,729,566.76
5. Step 5: Solve for x
   x = 5,729,566.76/2,672.16
6. Step 6: Final answer
   x = 2,144.17