Finding the Fourth Proportional to 2,889.90, 3,986.50 and 2,516.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.90 : 3,986.50 = 2,516.22 : x
2. Step 2: Convert to fraction form
   2,889.90/3,986.50 = 2,516.22/x
3. Step 3: Cross multiply
   2,889.90x = 3,986.50 × 2,516.22
4. Step 4: Simplify right side
   2,889.90x = 10,030,911.03
5. Step 5: Solve for x
   x = 10,030,911.03/2,889.90
6. Step 6: Final answer
   x = 3,471.02