Finding the Fourth Proportional to 1,906.86, 2,631.39 and 1,067.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.86 : 2,631.39 = 1,067.55 : x
2. Step 2: Convert to fraction form
   1,906.86/2,631.39 = 1,067.55/x
3. Step 3: Cross multiply
   1,906.86x = 2,631.39 × 1,067.55
4. Step 4: Simplify right side
   1,906.86x = 2,809,140.39
5. Step 5: Solve for x
   x = 2,809,140.39/1,906.86
6. Step 6: Final answer
   x = 1,473.18