Finding the Fourth Proportional to 2,641.82, 3,963.40 and 792.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.82 : 3,963.40 = 792.94 : x
2. Step 2: Convert to fraction form
   2,641.82/3,963.40 = 792.94/x
3. Step 3: Cross multiply
   2,641.82x = 3,963.40 × 792.94
4. Step 4: Simplify right side
   2,641.82x = 3,142,738.40
5. Step 5: Solve for x
   x = 3,142,738.40/2,641.82
6. Step 6: Final answer
   x = 1,189.61