Finding the Fourth Proportional to 2,562.21, 3,839.58 and 1,391.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.21 : 3,839.58 = 1,391.22 : x
2. Step 2: Convert to fraction form
   2,562.21/3,839.58 = 1,391.22/x
3. Step 3: Cross multiply
   2,562.21x = 3,839.58 × 1,391.22
4. Step 4: Simplify right side
   2,562.21x = 5,341,700.49
5. Step 5: Solve for x
   x = 5,341,700.49/2,562.21
6. Step 6: Final answer
   x = 2,084.80