Finding the Fourth Proportional to 2,111.94, 3,168.36 and 879.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.94 : 3,168.36 = 879.62 : x
2. Step 2: Convert to fraction form
   2,111.94/3,168.36 = 879.62/x
3. Step 3: Cross multiply
   2,111.94x = 3,168.36 × 879.62
4. Step 4: Simplify right side
   2,111.94x = 2,786,952.82
5. Step 5: Solve for x
   x = 2,786,952.82/2,111.94
6. Step 6: Final answer
   x = 1,319.62