Finding the Fourth Proportional to 1,382.69, 1,907.78 and 940.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.69 : 1,907.78 = 940.83 : x
2. Step 2: Convert to fraction form
   1,382.69/1,907.78 = 940.83/x
3. Step 3: Cross multiply
   1,382.69x = 1,907.78 × 940.83
4. Step 4: Simplify right side
   1,382.69x = 1,794,891.95
5. Step 5: Solve for x
   x = 1,794,891.95/1,382.69
6. Step 6: Final answer
   x = 1,298.12