Finding the Fourth Proportional to 2,955.22, 4,431.27 and 1,311.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,955.22 : 4,431.27 = 1,311.05 : x
2. Step 2: Convert to fraction form
   2,955.22/4,431.27 = 1,311.05/x
3. Step 3: Cross multiply
   2,955.22x = 4,431.27 × 1,311.05
4. Step 4: Simplify right side
   2,955.22x = 5,809,616.53
5. Step 5: Solve for x
   x = 5,809,616.53/2,955.22
6. Step 6: Final answer
   x = 1,965.88