Finding the Fourth Proportional to 2,722.20, 3,756.72 and 1,543.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.20 : 3,756.72 = 1,543.32 : x
2. Step 2: Convert to fraction form
   2,722.20/3,756.72 = 1,543.32/x
3. Step 3: Cross multiply
   2,722.20x = 3,756.72 × 1,543.32
4. Step 4: Simplify right side
   2,722.20x = 5,797,821.11
5. Step 5: Solve for x
   x = 5,797,821.11/2,722.20
6. Step 6: Final answer
   x = 2,129.83