Finding the Fourth Proportional to 2,559.47, 3,839.90 and 1,326.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.47 : 3,839.90 = 1,326.02 : x
2. Step 2: Convert to fraction form
   2,559.47/3,839.90 = 1,326.02/x
3. Step 3: Cross multiply
   2,559.47x = 3,839.90 × 1,326.02
4. Step 4: Simplify right side
   2,559.47x = 5,091,758.37
5. Step 5: Solve for x
   x = 5,091,758.37/2,559.47
6. Step 6: Final answer
   x = 1,989.38