Finding the Fourth Proportional to 1,382.38, 1,906.25 and 1,067.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.38 : 1,906.25 = 1,067.70 : x
2. Step 2: Convert to fraction form
   1,382.38/1,906.25 = 1,067.70/x
3. Step 3: Cross multiply
   1,382.38x = 1,906.25 × 1,067.70
4. Step 4: Simplify right side
   1,382.38x = 2,035,300.22
5. Step 5: Solve for x
   x = 2,035,300.22/1,382.38
6. Step 6: Final answer
   x = 1,472.31