Finding the Fourth Proportional to 3,721.04, 5,581.69 and 1,871.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.04 : 5,581.69 = 1,871.15 : x
2. Step 2: Convert to fraction form
   3,721.04/5,581.69 = 1,871.15/x
3. Step 3: Cross multiply
   3,721.04x = 5,581.69 × 1,871.15
4. Step 4: Simplify right side
   3,721.04x = 10,444,146.66
5. Step 5: Solve for x
   x = 10,444,146.66/3,721.04
6. Step 6: Final answer
   x = 2,806.78