Finding the Fourth Proportional to 2,648.40, 3,655.32 and 2,205.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.40 : 3,655.32 = 2,205.84 : x
2. Step 2: Convert to fraction form
   2,648.40/3,655.32 = 2,205.84/x
3. Step 3: Cross multiply
   2,648.40x = 3,655.32 × 2,205.84
4. Step 4: Simplify right side
   2,648.40x = 8,063,051.07
5. Step 5: Solve for x
   x = 8,063,051.07/2,648.40
6. Step 6: Final answer
   x = 3,044.50