Finding the Fourth Proportional to 2,067.21, 3,100.82 and 1,201.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.21 : 3,100.82 = 1,201.05 : x
2. Step 2: Convert to fraction form
   2,067.21/3,100.82 = 1,201.05/x
3. Step 3: Cross multiply
   2,067.21x = 3,100.82 × 1,201.05
4. Step 4: Simplify right side
   2,067.21x = 3,724,233.86
5. Step 5: Solve for x
   x = 3,724,233.86/2,067.21
6. Step 6: Final answer
   x = 1,801.58