Finding the Fourth Proportional to 2,722.31, 3,756.69 and 1,543.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.31 : 3,756.69 = 1,543.61 : x
2. Step 2: Convert to fraction form
   2,722.31/3,756.69 = 1,543.61/x
3. Step 3: Cross multiply
   2,722.31x = 3,756.69 × 1,543.61
4. Step 4: Simplify right side
   2,722.31x = 5,798,864.25
5. Step 5: Solve for x
   x = 5,798,864.25/2,722.31
6. Step 6: Final answer
   x = 2,130.13