Finding the Fourth Proportional to 3,643.62, 5,028.20 and 2,071.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643.62 : 5,028.20 = 2,071.82 : x
2. Step 2: Convert to fraction form
   3,643.62/5,028.20 = 2,071.82/x
3. Step 3: Cross multiply
   3,643.62x = 5,028.20 × 2,071.82
4. Step 4: Simplify right side
   3,643.62x = 10,417,525.32
5. Step 5: Solve for x
   x = 10,417,525.32/3,643.62
6. Step 6: Final answer
   x = 2,859.11