Finding the Fourth Proportional to 2,642.51, 3,959.83 and 2,409.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.51 : 3,959.83 = 2,409.12 : x
2. Step 2: Convert to fraction form
   2,642.51/3,959.83 = 2,409.12/x
3. Step 3: Cross multiply
   2,642.51x = 3,959.83 × 2,409.12
4. Step 4: Simplify right side
   2,642.51x = 9,539,705.65
5. Step 5: Solve for x
   x = 9,539,705.65/2,642.51
6. Step 6: Final answer
   x = 3,610.09