Finding the Fourth Proportional to 2,111.18, 3,165.07 and 879.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.18 : 3,165.07 = 879.52 : x
2. Step 2: Convert to fraction form
   2,111.18/3,165.07 = 879.52/x
3. Step 3: Cross multiply
   2,111.18x = 3,165.07 × 879.52
4. Step 4: Simplify right side
   2,111.18x = 2,783,730.06
5. Step 5: Solve for x
   x = 2,783,730.06/2,111.18
6. Step 6: Final answer
   x = 1,318.57