Finding the Fourth Proportional to 2,521.22, 3,782.34 and 877.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.22 : 3,782.34 = 877.89 : x
2. Step 2: Convert to fraction form
   2,521.22/3,782.34 = 877.89/x
3. Step 3: Cross multiply
   2,521.22x = 3,782.34 × 877.89
4. Step 4: Simplify right side
   2,521.22x = 3,320,473.27
5. Step 5: Solve for x
   x = 3,320,473.27/2,521.22
6. Step 6: Final answer
   x = 1,317.01