Finding the Fourth Proportional to 2,826.55, 4,241.33 and 2,128.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.55 : 4,241.33 = 2,128.42 : x
2. Step 2: Convert to fraction form
   2,826.55/4,241.33 = 2,128.42/x
3. Step 3: Cross multiply
   2,826.55x = 4,241.33 × 2,128.42
4. Step 4: Simplify right side
   2,826.55x = 9,027,331.60
5. Step 5: Solve for x
   x = 9,027,331.60/2,826.55
6. Step 6: Final answer
   x = 3,193.76