Finding the Fourth Proportional to 3,643.56, 5,028.21 and 2,071.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643.56 : 5,028.21 = 2,071.89 : x
2. Step 2: Convert to fraction form
   3,643.56/5,028.21 = 2,071.89/x
3. Step 3: Cross multiply
   3,643.56x = 5,028.21 × 2,071.89
4. Step 4: Simplify right side
   3,643.56x = 10,417,898.02
5. Step 5: Solve for x
   x = 10,417,898.02/3,643.56
6. Step 6: Final answer
   x = 2,859.26