Finding the Fourth Proportional to 3,665.69, 5,494.41 and 1,818.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.69 : 5,494.41 = 1,818.13 : x
2. Step 2: Convert to fraction form
   3,665.69/5,494.41 = 1,818.13/x
3. Step 3: Cross multiply
   3,665.69x = 5,494.41 × 1,818.13
4. Step 4: Simplify right side
   3,665.69x = 9,989,551.65
5. Step 5: Solve for x
   x = 9,989,551.65/3,665.69
6. Step 6: Final answer
   x = 2,725.15