Finding the Fourth Proportional to 3,531.28, 5,297.82 and 2,071.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,531.28 : 5,297.82 = 2,071.72 : x
2. Step 2: Convert to fraction form
   3,531.28/5,297.82 = 2,071.72/x
3. Step 3: Cross multiply
   3,531.28x = 5,297.82 × 2,071.72
4. Step 4: Simplify right side
   3,531.28x = 10,975,599.65
5. Step 5: Solve for x
   x = 10,975,599.65/3,531.28
6. Step 6: Final answer
   x = 3,108.11