Finding the Fourth Proportional to 2,405.69, 3,608.97 and 845.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.69 : 3,608.97 = 845.22 : x
2. Step 2: Convert to fraction form
   2,405.69/3,608.97 = 845.22/x
3. Step 3: Cross multiply
   2,405.69x = 3,608.97 × 845.22
4. Step 4: Simplify right side
   2,405.69x = 3,050,370.45
5. Step 5: Solve for x
   x = 3,050,370.45/2,405.69
6. Step 6: Final answer
   x = 1,267.98