Finding the Fourth Proportional to 3,858.50, 5,324.69 and 2,090.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858.50 : 5,324.69 = 2,090.10 : x
2. Step 2: Convert to fraction form
   3,858.50/5,324.69 = 2,090.10/x
3. Step 3: Cross multiply
   3,858.50x = 5,324.69 × 2,090.10
4. Step 4: Simplify right side
   3,858.50x = 11,129,102.72
5. Step 5: Solve for x
   x = 11,129,102.72/3,858.50
6. Step 6: Final answer
   x = 2,884.31