Finding the Fourth Proportional to 2,641.59, 3,963.17 and 792.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.59 : 3,963.17 = 792.76 : x
2. Step 2: Convert to fraction form
   2,641.59/3,963.17 = 792.76/x
3. Step 3: Cross multiply
   2,641.59x = 3,963.17 × 792.76
4. Step 4: Simplify right side
   2,641.59x = 3,141,842.65
5. Step 5: Solve for x
   x = 3,141,842.65/2,641.59
6. Step 6: Final answer
   x = 1,189.38