Finding the Fourth Proportional to 2,965.76, 4,449.42 and 885.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,965.76 : 4,449.42 = 885.77 : x
2. Step 2: Convert to fraction form
   2,965.76/4,449.42 = 885.77/x
3. Step 3: Cross multiply
   2,965.76x = 4,449.42 × 885.77
4. Step 4: Simplify right side
   2,965.76x = 3,941,140.51
5. Step 5: Solve for x
   x = 3,941,140.51/2,965.76
6. Step 6: Final answer
   x = 1,328.88