Finding the Fourth Proportional to 2,958.30, 4,435.59 and 1,399.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.30 : 4,435.59 = 1,399.02 : x
2. Step 2: Convert to fraction form
   2,958.30/4,435.59 = 1,399.02/x
3. Step 3: Cross multiply
   2,958.30x = 4,435.59 × 1,399.02
4. Step 4: Simplify right side
   2,958.30x = 6,205,480.88
5. Step 5: Solve for x
   x = 6,205,480.88/2,958.30
6. Step 6: Final answer
   x = 2,097.65