Finding the Fourth Proportional to 2,405.12, 3,607.52 and 845.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.12 : 3,607.52 = 845.18 : x
2. Step 2: Convert to fraction form
   2,405.12/3,607.52 = 845.18/x
3. Step 3: Cross multiply
   2,405.12x = 3,607.52 × 845.18
4. Step 4: Simplify right side
   2,405.12x = 3,049,003.75
5. Step 5: Solve for x
   x = 3,049,003.75/2,405.12
6. Step 6: Final answer
   x = 1,267.71