Finding the Fourth Proportional to 3,672.88, 5,500.44 and 1,821.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.88 : 5,500.44 = 1,821.42 : x
2. Step 2: Convert to fraction form
   3,672.88/5,500.44 = 1,821.42/x
3. Step 3: Cross multiply
   3,672.88x = 5,500.44 × 1,821.42
4. Step 4: Simplify right side
   3,672.88x = 10,018,611.42
5. Step 5: Solve for x
   x = 10,018,611.42/3,672.88
6. Step 6: Final answer
   x = 2,727.73