Finding the Fourth Proportional to 2,895.60, 3,996.04 and 1,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,895.60 : 3,996.04 = 1,636.72 : x
2. Step 2: Convert to fraction form
   2,895.60/3,996.04 = 1,636.72/x
3. Step 3: Cross multiply
   2,895.60x = 3,996.04 × 1,636.72
4. Step 4: Simplify right side
   2,895.60x = 6,540,398.59
5. Step 5: Solve for x
   x = 6,540,398.59/2,895.60
6. Step 6: Final answer
   x = 2,258.74