Finding the Fourth Proportional to 2,022.88, 3,031.62 and 1,291.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.88 : 3,031.62 = 1,291.72 : x
2. Step 2: Convert to fraction form
   2,022.88/3,031.62 = 1,291.72/x
3. Step 3: Cross multiply
   2,022.88x = 3,031.62 × 1,291.72
4. Step 4: Simplify right side
   2,022.88x = 3,916,004.19
5. Step 5: Solve for x
   x = 3,916,004.19/2,022.88
6. Step 6: Final answer
   x = 1,935.86