Finding the Fourth Proportional to 2,405.69, 3,319.31 and 1,357.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.69 : 3,319.31 = 1,357.37 : x
2. Step 2: Convert to fraction form
   2,405.69/3,319.31 = 1,357.37/x
3. Step 3: Cross multiply
   2,405.69x = 3,319.31 × 1,357.37
4. Step 4: Simplify right side
   2,405.69x = 4,505,525.03
5. Step 5: Solve for x
   x = 4,505,525.03/2,405.69
6. Step 6: Final answer
   x = 1,872.86