Finding the Fourth Proportional to 2,062.88, 3,090.21 and 1,281.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,062.88 : 3,090.21 = 1,281.03 : x
2. Step 2: Convert to fraction form
   2,062.88/3,090.21 = 1,281.03/x
3. Step 3: Cross multiply
   2,062.88x = 3,090.21 × 1,281.03
4. Step 4: Simplify right side
   2,062.88x = 3,958,651.72
5. Step 5: Solve for x
   x = 3,958,651.72/2,062.88
6. Step 6: Final answer
   x = 1,918.99