Finding the Fourth Proportional to 2,642.22, 3,960.50 and 1,179.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.22 : 3,960.50 = 1,179.36 : x
2. Step 2: Convert to fraction form
   2,642.22/3,960.50 = 1,179.36/x
3. Step 3: Cross multiply
   2,642.22x = 3,960.50 × 1,179.36
4. Step 4: Simplify right side
   2,642.22x = 4,670,849.38
5. Step 5: Solve for x
   x = 4,670,849.38/2,642.22
6. Step 6: Final answer
   x = 1,767.77