Finding the Fourth Proportional to 3,480.52, 5,218.73 and 2,311.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,480.52 : 5,218.73 = 2,311.16 : x
2. Step 2: Convert to fraction form
   3,480.52/5,218.73 = 2,311.16/x
3. Step 3: Cross multiply
   3,480.52x = 5,218.73 × 2,311.16
4. Step 4: Simplify right side
   3,480.52x = 12,061,305.72
5. Step 5: Solve for x
   x = 12,061,305.72/3,480.52
6. Step 6: Final answer
   x = 3,465.38