Finding the Fourth Proportional to 2,615.20, 3,923.52 and 883.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.20 : 3,923.52 = 883.84 : x
2. Step 2: Convert to fraction form
   2,615.20/3,923.52 = 883.84/x
3. Step 3: Cross multiply
   2,615.20x = 3,923.52 × 883.84
4. Step 4: Simplify right side
   2,615.20x = 3,467,763.92
5. Step 5: Solve for x
   x = 3,467,763.92/2,615.20
6. Step 6: Final answer
   x = 1,326.00