Finding the Fourth Proportional to 2,191.56, 3,285.48 and 958.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.56 : 3,285.48 = 958.03 : x
2. Step 2: Convert to fraction form
   2,191.56/3,285.48 = 958.03/x
3. Step 3: Cross multiply
   2,191.56x = 3,285.48 × 958.03
4. Step 4: Simplify right side
   2,191.56x = 3,147,583.78
5. Step 5: Solve for x
   x = 3,147,583.78/2,191.56
6. Step 6: Final answer
   x = 1,436.23