Finding the Fourth Proportional to 2,521.88, 3,782.71 and 672.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.88 : 3,782.71 = 672.96 : x
2. Step 2: Convert to fraction form
   2,521.88/3,782.71 = 672.96/x
3. Step 3: Cross multiply
   2,521.88x = 3,782.71 × 672.96
4. Step 4: Simplify right side
   2,521.88x = 2,545,607.22
5. Step 5: Solve for x
   x = 2,545,607.22/2,521.88
6. Step 6: Final answer
   x = 1,009.41