Finding the Fourth Proportional to 2,405.83, 3,609.46 and 717.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.83 : 3,609.46 = 717.28 : x
2. Step 2: Convert to fraction form
   2,405.83/3,609.46 = 717.28/x
3. Step 3: Cross multiply
   2,405.83x = 3,609.46 × 717.28
4. Step 4: Simplify right side
   2,405.83x = 2,588,973.63
5. Step 5: Solve for x
   x = 2,588,973.63/2,405.83
6. Step 6: Final answer
   x = 1,076.12