Finding the Fourth Proportional to 2,636.24, 3,954.72 and 880.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.24 : 3,954.72 = 880.66 : x
2. Step 2: Convert to fraction form
   2,636.24/3,954.72 = 880.66/x
3. Step 3: Cross multiply
   2,636.24x = 3,954.72 × 880.66
4. Step 4: Simplify right side
   2,636.24x = 3,482,763.72
5. Step 5: Solve for x
   x = 3,482,763.72/2,636.24
6. Step 6: Final answer
   x = 1,321.11