Finding the Fourth Proportional to 2,636.55, 3,956.04 and 1,077.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.55 : 3,956.04 = 1,077.71 : x
2. Step 2: Convert to fraction form
   2,636.55/3,956.04 = 1,077.71/x
3. Step 3: Cross multiply
   2,636.55x = 3,956.04 × 1,077.71
4. Step 4: Simplify right side
   2,636.55x = 4,263,444.09
5. Step 5: Solve for x
   x = 4,263,444.09/2,636.55
6. Step 6: Final answer
   x = 1,617.05