Finding the Fourth Proportional to 3,669.67, 5,490.83 and 2,189.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.67 : 5,490.83 = 2,189.69 : x
2. Step 2: Convert to fraction form
   3,669.67/5,490.83 = 2,189.69/x
3. Step 3: Cross multiply
   3,669.67x = 5,490.83 × 2,189.69
4. Step 4: Simplify right side
   3,669.67x = 12,023,215.54
5. Step 5: Solve for x
   x = 12,023,215.54/3,669.67
6. Step 6: Final answer
   x = 3,276.38