Finding the Fourth Proportional to 3,555.91, 5,333.05 and 959.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555.91 : 5,333.05 = 959.05 : x
2. Step 2: Convert to fraction form
   3,555.91/5,333.05 = 959.05/x
3. Step 3: Cross multiply
   3,555.91x = 5,333.05 × 959.05
4. Step 4: Simplify right side
   3,555.91x = 5,114,661.60
5. Step 5: Solve for x
   x = 5,114,661.60/3,555.91
6. Step 6: Final answer
   x = 1,438.36