Finding the Fourth Proportional to 1,382.31, 1,907.82 and 792.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.31 : 1,907.82 = 792.90 : x
2. Step 2: Convert to fraction form
   1,382.31/1,907.82 = 792.90/x
3. Step 3: Cross multiply
   1,382.31x = 1,907.82 × 792.90
4. Step 4: Simplify right side
   1,382.31x = 1,512,710.48
5. Step 5: Solve for x
   x = 1,512,710.48/1,382.31
6. Step 6: Final answer
   x = 1,094.34