Finding the Fourth Proportional to 2,641.52, 3,962.87 and 1,408.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.52 : 3,962.87 = 1,408.28 : x
2. Step 2: Convert to fraction form
   2,641.52/3,962.87 = 1,408.28/x
3. Step 3: Cross multiply
   2,641.52x = 3,962.87 × 1,408.28
4. Step 4: Simplify right side
   2,641.52x = 5,580,814.27
5. Step 5: Solve for x
   x = 5,580,814.27/2,641.52
6. Step 6: Final answer
   x = 2,112.73