Finding the Fourth Proportional to 2,648.64, 3,661.62 and 2,623.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.64 : 3,661.62 = 2,623.72 : x
2. Step 2: Convert to fraction form
   2,648.64/3,661.62 = 2,623.72/x
3. Step 3: Cross multiply
   2,648.64x = 3,661.62 × 2,623.72
4. Step 4: Simplify right side
   2,648.64x = 9,607,065.63
5. Step 5: Solve for x
   x = 9,607,065.63/2,648.64
6. Step 6: Final answer
   x = 3,627.17