Finding the Fourth Proportional to 3,869.34, 5,802.09 and 2,758.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.34 : 5,802.09 = 2,758.15 : x
2. Step 2: Convert to fraction form
   3,869.34/5,802.09 = 2,758.15/x
3. Step 3: Cross multiply
   3,869.34x = 5,802.09 × 2,758.15
4. Step 4: Simplify right side
   3,869.34x = 16,003,034.53
5. Step 5: Solve for x
   x = 16,003,034.53/3,869.34
6. Step 6: Final answer
   x = 4,135.86