Finding the Fourth Proportional to 2,644.77, 3,962.25 and 1,326.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.77 : 3,962.25 = 1,326.98 : x
2. Step 2: Convert to fraction form
   2,644.77/3,962.25 = 1,326.98/x
3. Step 3: Cross multiply
   2,644.77x = 3,962.25 × 1,326.98
4. Step 4: Simplify right side
   2,644.77x = 5,257,806.69
5. Step 5: Solve for x
   x = 5,257,806.69/2,644.77
6. Step 6: Final answer
   x = 1,988.00