Finding the Fourth Proportional to 3,669.27, 5,499.76 and 1,821.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.27 : 5,499.76 = 1,821.70 : x
2. Step 2: Convert to fraction form
   3,669.27/5,499.76 = 1,821.70/x
3. Step 3: Cross multiply
   3,669.27x = 5,499.76 × 1,821.70
4. Step 4: Simplify right side
   3,669.27x = 10,018,903.68
5. Step 5: Solve for x
   x = 10,018,903.68/3,669.27
6. Step 6: Final answer
   x = 2,730.49