Finding the Fourth Proportional to 3,555.86, 5,333.83 and 958.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555.86 : 5,333.83 = 958.79 : x
2. Step 2: Convert to fraction form
   3,555.86/5,333.83 = 958.79/x
3. Step 3: Cross multiply
   3,555.86x = 5,333.83 × 958.79
4. Step 4: Simplify right side
   3,555.86x = 5,114,033.80
5. Step 5: Solve for x
   x = 5,114,033.80/3,555.86
6. Step 6: Final answer
   x = 1,438.20