Finding the Fourth Proportional to 2,405.72, 3,606.12 and 942.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.72 : 3,606.12 = 942.88 : x
2. Step 2: Convert to fraction form
   2,405.72/3,606.12 = 942.88/x
3. Step 3: Cross multiply
   2,405.72x = 3,606.12 × 942.88
4. Step 4: Simplify right side
   2,405.72x = 3,400,138.43
5. Step 5: Solve for x
   x = 3,400,138.43/2,405.72
6. Step 6: Final answer
   x = 1,413.36