Finding the Fourth Proportional to 3,061.72, 4,589.61 and 1,212.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.72 : 4,589.61 = 1,212.22 : x
2. Step 2: Convert to fraction form
   3,061.72/4,589.61 = 1,212.22/x
3. Step 3: Cross multiply
   3,061.72x = 4,589.61 × 1,212.22
4. Step 4: Simplify right side
   3,061.72x = 5,563,617.03
5. Step 5: Solve for x
   x = 5,563,617.03/3,061.72
6. Step 6: Final answer
   x = 1,817.15