Finding the Fourth Proportional to 2,802.12, 3,866.88 and 1,543.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,802.12 : 3,866.88 = 1,543.24 : x
2. Step 2: Convert to fraction form
   2,802.12/3,866.88 = 1,543.24/x
3. Step 3: Cross multiply
   2,802.12x = 3,866.88 × 1,543.24
4. Step 4: Simplify right side
   2,802.12x = 5,967,523.89
5. Step 5: Solve for x
   x = 5,967,523.89/2,802.12
6. Step 6: Final answer
   x = 2,129.65