Finding the Fourth Proportional to 3,556.22, 5,333.60 and 958.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,556.22 : 5,333.60 = 958.55 : x
2. Step 2: Convert to fraction form
   3,556.22/5,333.60 = 958.55/x
3. Step 3: Cross multiply
   3,556.22x = 5,333.60 × 958.55
4. Step 4: Simplify right side
   3,556.22x = 5,112,498.01
5. Step 5: Solve for x
   x = 5,112,498.01/3,556.22
6. Step 6: Final answer
   x = 1,437.62