Finding the Fourth Proportional to 2,955.21, 4,433.94 and 1,107.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,955.21 : 4,433.94 = 1,107.15 : x
2. Step 2: Convert to fraction form
   2,955.21/4,433.94 = 1,107.15/x
3. Step 3: Cross multiply
   2,955.21x = 4,433.94 × 1,107.15
4. Step 4: Simplify right side
   2,955.21x = 4,909,036.67
5. Step 5: Solve for x
   x = 4,909,036.67/2,955.21
6. Step 6: Final answer
   x = 1,661.15