Finding the Fourth Proportional to 1,906.99, 2,631.61 and 1,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.99 : 2,631.61 = 1,067.72 : x
2. Step 2: Convert to fraction form
   1,906.99/2,631.61 = 1,067.72/x
3. Step 3: Cross multiply
   1,906.99x = 2,631.61 × 1,067.72
4. Step 4: Simplify right side
   1,906.99x = 2,809,826.54
5. Step 5: Solve for x
   x = 2,809,826.54/1,906.99
6. Step 6: Final answer
   x = 1,473.44