Finding the Fourth Proportional to 1,743.12, 2,609.73 and 1,578.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,743.12 : 2,609.73 = 1,578.89 : x
2. Step 2: Convert to fraction form
   1,743.12/2,609.73 = 1,578.89/x
3. Step 3: Cross multiply
   1,743.12x = 2,609.73 × 1,578.89
4. Step 4: Simplify right side
   1,743.12x = 4,120,463.55
5. Step 5: Solve for x
   x = 4,120,463.55/1,743.12
6. Step 6: Final answer
   x = 2,363.84