Finding the Fourth Proportional to 2,636.88, 3,954.72 and 1,077.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.88 : 3,954.72 = 1,077.96 : x
2. Step 2: Convert to fraction form
   2,636.88/3,954.72 = 1,077.96/x
3. Step 3: Cross multiply
   2,636.88x = 3,954.72 × 1,077.96
4. Step 4: Simplify right side
   2,636.88x = 4,263,029.97
5. Step 5: Solve for x
   x = 4,263,029.97/2,636.88
6. Step 6: Final answer
   x = 1,616.69