Finding the Fourth Proportional to 2,641.33, 3,964.88 and 1,945.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.33 : 3,964.88 = 1,945.83 : x
2. Step 2: Convert to fraction form
   2,641.33/3,964.88 = 1,945.83/x
3. Step 3: Cross multiply
   2,641.33x = 3,964.88 × 1,945.83
4. Step 4: Simplify right side
   2,641.33x = 7,714,982.45
5. Step 5: Solve for x
   x = 7,714,982.45/2,641.33
6. Step 6: Final answer
   x = 2,920.87