Finding the Fourth Proportional to 1,906.72, 2,631.29 and 1,067.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.72 : 2,631.29 = 1,067.47 : x
2. Step 2: Convert to fraction form
   1,906.72/2,631.29 = 1,067.47/x
3. Step 3: Cross multiply
   1,906.72x = 2,631.29 × 1,067.47
4. Step 4: Simplify right side
   1,906.72x = 2,808,823.14
5. Step 5: Solve for x
   x = 2,808,823.14/1,906.72
6. Step 6: Final answer
   x = 1,473.12