Finding the Fourth Proportional to 2,391.59, 3,589.76 and 1,958.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.59 : 3,589.76 = 1,958.00 : x
2. Step 2: Convert to fraction form
   2,391.59/3,589.76 = 1,958.00/x
3. Step 3: Cross multiply
   2,391.59x = 3,589.76 × 1,958.00
4. Step 4: Simplify right side
   2,391.59x = 7,028,737.03
5. Step 5: Solve for x
   x = 7,028,737.03/2,391.59
6. Step 6: Final answer
   x = 2,938.94