Finding the Fourth Proportional to 1,382.78, 1,908.41 and 793.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.78 : 1,908.41 = 793.50 : x
2. Step 2: Convert to fraction form
   1,382.78/1,908.41 = 793.50/x
3. Step 3: Cross multiply
   1,382.78x = 1,908.41 × 793.50
4. Step 4: Simplify right side
   1,382.78x = 1,514,323.34
5. Step 5: Solve for x
   x = 1,514,323.34/1,382.78
6. Step 6: Final answer
   x = 1,095.13