Finding the Fourth Proportional to 2,522.78, 3,784.36 and 879.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.78 : 3,784.36 = 879.29 : x
2. Step 2: Convert to fraction form
   2,522.78/3,784.36 = 879.29/x
3. Step 3: Cross multiply
   2,522.78x = 3,784.36 × 879.29
4. Step 4: Simplify right side
   2,522.78x = 3,327,530.98
5. Step 5: Solve for x
   x = 3,327,530.98/2,522.78
6. Step 6: Final answer
   x = 1,319.00