Finding the Fourth Proportional to 3,532.74, 4,871.82 and 2,116.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,532.74 : 4,871.82 = 2,116.20 : x
2. Step 2: Convert to fraction form
   3,532.74/4,871.82 = 2,116.20/x
3. Step 3: Cross multiply
   3,532.74x = 4,871.82 × 2,116.20
4. Step 4: Simplify right side
   3,532.74x = 10,309,745.48
5. Step 5: Solve for x
   x = 10,309,745.48/3,532.74
6. Step 6: Final answer
   x = 2,918.34