Finding the Fourth Proportional to 2,648.39, 3,961.58 and 2,407.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.39 : 3,961.58 = 2,407.82 : x
2. Step 2: Convert to fraction form
   2,648.39/3,961.58 = 2,407.82/x
3. Step 3: Cross multiply
   2,648.39x = 3,961.58 × 2,407.82
4. Step 4: Simplify right side
   2,648.39x = 9,538,739.71
5. Step 5: Solve for x
   x = 9,538,739.71/2,648.39
6. Step 6: Final answer
   x = 3,601.72