Finding the Fourth Proportional to 2,641.19, 3,960.46 and 885.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.19 : 3,960.46 = 885.59 : x
2. Step 2: Convert to fraction form
   2,641.19/3,960.46 = 885.59/x
3. Step 3: Cross multiply
   2,641.19x = 3,960.46 × 885.59
4. Step 4: Simplify right side
   2,641.19x = 3,507,343.77
5. Step 5: Solve for x
   x = 3,507,343.77/2,641.19
6. Step 6: Final answer
   x = 1,327.94