Finding the Fourth Proportional to 2,801.82, 3,866.73 and 1,543.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.82 : 3,866.73 = 1,543.10 : x
2. Step 2: Convert to fraction form
   2,801.82/3,866.73 = 1,543.10/x
3. Step 3: Cross multiply
   2,801.82x = 3,866.73 × 1,543.10
4. Step 4: Simplify right side
   2,801.82x = 5,966,751.06
5. Step 5: Solve for x
   x = 5,966,751.06/2,801.82
6. Step 6: Final answer
   x = 2,129.60