Finding the Fourth Proportional to 2,600.70, 3,589.04 and 1,421.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.70 : 3,589.04 = 1,421.83 : x
2. Step 2: Convert to fraction form
   2,600.70/3,589.04 = 1,421.83/x
3. Step 3: Cross multiply
   2,600.70x = 3,589.04 × 1,421.83
4. Step 4: Simplify right side
   2,600.70x = 5,103,004.74
5. Step 5: Solve for x
   x = 5,103,004.74/2,600.70
6. Step 6: Final answer
   x = 1,962.17