Finding the Fourth Proportional to 2,405.24, 3,318.76 and 1,357.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.24 : 3,318.76 = 1,357.10 : x
2. Step 2: Convert to fraction form
   2,405.24/3,318.76 = 1,357.10/x
3. Step 3: Cross multiply
   2,405.24x = 3,318.76 × 1,357.10
4. Step 4: Simplify right side
   2,405.24x = 4,503,900.89
5. Step 5: Solve for x
   x = 4,503,900.89/2,405.24
6. Step 6: Final answer
   x = 1,872.54