Finding the Fourth Proportional to 2,309.20, 3,458.59 and 1,618.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.20 : 3,458.59 = 1,618.94 : x
2. Step 2: Convert to fraction form
   2,309.20/3,458.59 = 1,618.94/x
3. Step 3: Cross multiply
   2,309.20x = 3,458.59 × 1,618.94
4. Step 4: Simplify right side
   2,309.20x = 5,599,249.69
5. Step 5: Solve for x
   x = 5,599,249.69/2,309.20
6. Step 6: Final answer
   x = 2,424.76