Finding the Fourth Proportional to 2,393.83, 3,303.61 and 1,399.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,393.83 : 3,303.61 = 1,399.05 : x
2. Step 2: Convert to fraction form
   2,393.83/3,303.61 = 1,399.05/x
3. Step 3: Cross multiply
   2,393.83x = 3,303.61 × 1,399.05
4. Step 4: Simplify right side
   2,393.83x = 4,621,915.57
5. Step 5: Solve for x
   x = 4,621,915.57/2,393.83
6. Step 6: Final answer
   x = 1,930.76