Finding the Fourth Proportional to 2,644.77, 3,965.86 and 1,084.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.77 : 3,965.86 = 1,084.49 : x
2. Step 2: Convert to fraction form
   2,644.77/3,965.86 = 1,084.49/x
3. Step 3: Cross multiply
   2,644.77x = 3,965.86 × 1,084.49
4. Step 4: Simplify right side
   2,644.77x = 4,300,931.91
5. Step 5: Solve for x
   x = 4,300,931.91/2,644.77
6. Step 6: Final answer
   x = 1,626.20