Finding the Fourth Proportional to 2,641.30, 3,959.20 and 884.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.30 : 3,959.20 = 884.98 : x
2. Step 2: Convert to fraction form
   2,641.30/3,959.20 = 884.98/x
3. Step 3: Cross multiply
   2,641.30x = 3,959.20 × 884.98
4. Step 4: Simplify right side
   2,641.30x = 3,503,812.82
5. Step 5: Solve for x
   x = 3,503,812.82/2,641.30
6. Step 6: Final answer
   x = 1,326.55