Finding the Fourth Proportional to 2,644.35, 3,960.05 and 1,776.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.35 : 3,960.05 = 1,776.03 : x
2. Step 2: Convert to fraction form
   2,644.35/3,960.05 = 1,776.03/x
3. Step 3: Cross multiply
   2,644.35x = 3,960.05 × 1,776.03
4. Step 4: Simplify right side
   2,644.35x = 7,033,158.72
5. Step 5: Solve for x
   x = 7,033,158.72/2,644.35
6. Step 6: Final answer
   x = 2,659.69