Finding the Fourth Proportional to 2,357.02, 3,251.46 and 1,399.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.02 : 3,251.46 = 1,399.37 : x
2. Step 2: Convert to fraction form
   2,357.02/3,251.46 = 1,399.37/x
3. Step 3: Cross multiply
   2,357.02x = 3,251.46 × 1,399.37
4. Step 4: Simplify right side
   2,357.02x = 4,549,995.58
5. Step 5: Solve for x
   x = 4,549,995.58/2,357.02
6. Step 6: Final answer
   x = 1,930.40