Finding the Fourth Proportional to 2,090.27, 2,884.61 and 1,206.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.27 : 2,884.61 = 1,206.11 : x
2. Step 2: Convert to fraction form
   2,090.27/2,884.61 = 1,206.11/x
3. Step 3: Cross multiply
   2,090.27x = 2,884.61 × 1,206.11
4. Step 4: Simplify right side
   2,090.27x = 3,479,150.97
5. Step 5: Solve for x
   x = 3,479,150.97/2,090.27
6. Step 6: Final answer
   x = 1,664.45