Finding the Fourth Proportional to 2,636.71, 3,955.61 and 1,076.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.71 : 3,955.61 = 1,076.71 : x
2. Step 2: Convert to fraction form
   2,636.71/3,955.61 = 1,076.71/x
3. Step 3: Cross multiply
   2,636.71x = 3,955.61 × 1,076.71
4. Step 4: Simplify right side
   2,636.71x = 4,259,044.84
5. Step 5: Solve for x
   x = 4,259,044.84/2,636.71
6. Step 6: Final answer
   x = 1,615.29