Finding the Fourth Proportional to 2,641.88, 3,963.47 and 1,667.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.88 : 3,963.47 = 1,667.25 : x
2. Step 2: Convert to fraction form
   2,641.88/3,963.47 = 1,667.25/x
3. Step 3: Cross multiply
   2,641.88x = 3,963.47 × 1,667.25
4. Step 4: Simplify right side
   2,641.88x = 6,608,087.02
5. Step 5: Solve for x
   x = 6,608,087.02/2,641.88
6. Step 6: Final answer
   x = 2,501.28