Finding the Fourth Proportional to 2,356.47, 3,250.89 and 1,609.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.47 : 3,250.89 = 1,609.20 : x
2. Step 2: Convert to fraction form
   2,356.47/3,250.89 = 1,609.20/x
3. Step 3: Cross multiply
   2,356.47x = 3,250.89 × 1,609.20
4. Step 4: Simplify right side
   2,356.47x = 5,231,332.19
5. Step 5: Solve for x
   x = 5,231,332.19/2,356.47
6. Step 6: Final answer
   x = 2,219.99