Finding the Fourth Proportional to 2,600.82, 3,589.12 and 1,421.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.82 : 3,589.12 = 1,421.89 : x
2. Step 2: Convert to fraction form
   2,600.82/3,589.12 = 1,421.89/x
3. Step 3: Cross multiply
   2,600.82x = 3,589.12 × 1,421.89
4. Step 4: Simplify right side
   2,600.82x = 5,103,333.84
5. Step 5: Solve for x
   x = 5,103,333.84/2,600.82
6. Step 6: Final answer
   x = 1,962.20