Finding the Fourth Proportional to 2,143.23, 2,956.47 and 1,745.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.23 : 2,956.47 = 1,745.31 : x
2. Step 2: Convert to fraction form
   2,143.23/2,956.47 = 1,745.31/x
3. Step 3: Cross multiply
   2,143.23x = 2,956.47 × 1,745.31
4. Step 4: Simplify right side
   2,143.23x = 5,159,956.66
5. Step 5: Solve for x
   x = 5,159,956.66/2,143.23
6. Step 6: Final answer
   x = 2,407.56