Finding the Fourth Proportional to 2,636.92, 3,955.12 and 1,077.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.92 : 3,955.12 = 1,077.06 : x
2. Step 2: Convert to fraction form
   2,636.92/3,955.12 = 1,077.06/x
3. Step 3: Cross multiply
   2,636.92x = 3,955.12 × 1,077.06
4. Step 4: Simplify right side
   2,636.92x = 4,259,901.55
5. Step 5: Solve for x
   x = 4,259,901.55/2,636.92
6. Step 6: Final answer
   x = 1,615.48