Finding the Fourth Proportional to 2,106.99, 3,162.42 and 1,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.99 : 3,162.42 = 1,067.72 : x
2. Step 2: Convert to fraction form
   2,106.99/3,162.42 = 1,067.72/x
3. Step 3: Cross multiply
   2,106.99x = 3,162.42 × 1,067.72
4. Step 4: Simplify right side
   2,106.99x = 3,376,567.27
5. Step 5: Solve for x
   x = 3,376,567.27/2,106.99
6. Step 6: Final answer
   x = 1,602.55