Finding the Fourth Proportional to 2,722.72, 3,756.96 and 1,543.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.72 : 3,756.96 = 1,543.60 : x
2. Step 2: Convert to fraction form
   2,722.72/3,756.96 = 1,543.60/x
3. Step 3: Cross multiply
   2,722.72x = 3,756.96 × 1,543.60
4. Step 4: Simplify right side
   2,722.72x = 5,799,243.46
5. Step 5: Solve for x
   x = 5,799,243.46/2,722.72
6. Step 6: Final answer
   x = 2,129.94