Finding the Fourth Proportional to 2,317.78, 3,197.72 and 1,609.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.78 : 3,197.72 = 1,609.43 : x
2. Step 2: Convert to fraction form
   2,317.78/3,197.72 = 1,609.43/x
3. Step 3: Cross multiply
   2,317.78x = 3,197.72 × 1,609.43
4. Step 4: Simplify right side
   2,317.78x = 5,146,498.45
5. Step 5: Solve for x
   x = 5,146,498.45/2,317.78
6. Step 6: Final answer
   x = 2,220.45