Finding the Fourth Proportional to 3,665.09, 5,058.27 and 2,071.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.09 : 5,058.27 = 2,071.81 : x
2. Step 2: Convert to fraction form
   3,665.09/5,058.27 = 2,071.81/x
3. Step 3: Cross multiply
   3,665.09x = 5,058.27 × 2,071.81
4. Step 4: Simplify right side
   3,665.09x = 10,479,774.37
5. Step 5: Solve for x
   x = 10,479,774.37/3,665.09
6. Step 6: Final answer
   x = 2,859.35