Finding the Fourth Proportional to 3,669.18, 5,506.20 and 1,820.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.18 : 5,506.20 = 1,820.76 : x
2. Step 2: Convert to fraction form
   3,669.18/5,506.20 = 1,820.76/x
3. Step 3: Cross multiply
   3,669.18x = 5,506.20 × 1,820.76
4. Step 4: Simplify right side
   3,669.18x = 10,025,468.71
5. Step 5: Solve for x
   x = 10,025,468.71/3,669.18
6. Step 6: Final answer
   x = 2,732.35