Finding the Fourth Proportional to 3,768.37, 5,200.66 and 2,090.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.37 : 5,200.66 = 2,090.31 : x
2. Step 2: Convert to fraction form
   3,768.37/5,200.66 = 2,090.31/x
3. Step 3: Cross multiply
   3,768.37x = 5,200.66 × 2,090.31
4. Step 4: Simplify right side
   3,768.37x = 10,870,991.60
5. Step 5: Solve for x
   x = 10,870,991.60/3,768.37
6. Step 6: Final answer
   x = 2,884.80