Finding the Fourth Proportional to 2,405.98, 3,608.73 and 867.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.98 : 3,608.73 = 867.10 : x
2. Step 2: Convert to fraction form
   2,405.98/3,608.73 = 867.10/x
3. Step 3: Cross multiply
   2,405.98x = 3,608.73 × 867.10
4. Step 4: Simplify right side
   2,405.98x = 3,129,129.78
5. Step 5: Solve for x
   x = 3,129,129.78/2,405.98
6. Step 6: Final answer
   x = 1,300.56