Finding the Fourth Proportional to 2,405.25, 3,319.25 and 1,357.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.25 : 3,319.25 = 1,357.38 : x
2. Step 2: Convert to fraction form
   2,405.25/3,319.25 = 1,357.38/x
3. Step 3: Cross multiply
   2,405.25x = 3,319.25 × 1,357.38
4. Step 4: Simplify right side
   2,405.25x = 4,505,476.78
5. Step 5: Solve for x
   x = 4,505,476.78/2,405.25
6. Step 6: Final answer
   x = 1,873.18