Finding the Fourth Proportional to 2,721.68, 3,756.61 and 1,543.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.68 : 3,756.61 = 1,543.43 : x
2. Step 2: Convert to fraction form
   2,721.68/3,756.61 = 1,543.43/x
3. Step 3: Cross multiply
   2,721.68x = 3,756.61 × 1,543.43
4. Step 4: Simplify right side
   2,721.68x = 5,798,075.89
5. Step 5: Solve for x
   x = 5,798,075.89/2,721.68
6. Step 6: Final answer
   x = 2,130.33