Finding the Fourth Proportional to 2,327.79, 3,212.32 and 1,543.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,327.79 : 3,212.32 = 1,543.31 : x
2. Step 2: Convert to fraction form
   2,327.79/3,212.32 = 1,543.31/x
3. Step 3: Cross multiply
   2,327.79x = 3,212.32 × 1,543.31
4. Step 4: Simplify right side
   2,327.79x = 4,957,605.58
5. Step 5: Solve for x
   x = 4,957,605.58/2,327.79
6. Step 6: Final answer
   x = 2,129.75