Finding the Fourth Proportional to 2,521.47, 3,781.89 and 960.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.47 : 3,781.89 = 960.80 : x
2. Step 2: Convert to fraction form
   2,521.47/3,781.89 = 960.80/x
3. Step 3: Cross multiply
   2,521.47x = 3,781.89 × 960.80
4. Step 4: Simplify right side
   2,521.47x = 3,633,621.00
5. Step 5: Solve for x
   x = 3,633,621.00/2,521.47
6. Step 6: Final answer
   x = 1,441.07