Finding the Fourth Proportional to 2,090.81, 3,133.89 and 1,268.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.81 : 3,133.89 = 1,268.87 : x
2. Step 2: Convert to fraction form
   2,090.81/3,133.89 = 1,268.87/x
3. Step 3: Cross multiply
   2,090.81x = 3,133.89 × 1,268.87
4. Step 4: Simplify right side
   2,090.81x = 3,976,483.33
5. Step 5: Solve for x
   x = 3,976,483.33/2,090.81
6. Step 6: Final answer
   x = 1,901.88