Finding the Fourth Proportional to 2,522.25, 3,783.78 and 878.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.25 : 3,783.78 = 878.34 : x
2. Step 2: Convert to fraction form
   2,522.25/3,783.78 = 878.34/x
3. Step 3: Cross multiply
   2,522.25x = 3,783.78 × 878.34
4. Step 4: Simplify right side
   2,522.25x = 3,323,445.33
5. Step 5: Solve for x
   x = 3,323,445.33/2,522.25
6. Step 6: Final answer
   x = 1,317.65