Finding the Fourth Proportional to 3,060.72, 4,589.55 and 2,142.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,060.72 : 4,589.55 = 2,142.18 : x
2. Step 2: Convert to fraction form
   3,060.72/4,589.55 = 2,142.18/x
3. Step 3: Cross multiply
   3,060.72x = 4,589.55 × 2,142.18
4. Step 4: Simplify right side
   3,060.72x = 9,831,642.22
5. Step 5: Solve for x
   x = 9,831,642.22/3,060.72
6. Step 6: Final answer
   x = 3,212.20