Finding the Fourth Proportional to 2,522.83, 3,781.65 and 878.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.83 : 3,781.65 = 878.02 : x
2. Step 2: Convert to fraction form
   2,522.83/3,781.65 = 878.02/x
3. Step 3: Cross multiply
   2,522.83x = 3,781.65 × 878.02
4. Step 4: Simplify right side
   2,522.83x = 3,320,345.42
5. Step 5: Solve for x
   x = 3,320,345.42/2,522.83
6. Step 6: Final answer
   x = 1,316.12