Finding the Fourth Proportional to 2,522.45, 3,784.76 and 878.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.45 : 3,784.76 = 878.10 : x
2. Step 2: Convert to fraction form
   2,522.45/3,784.76 = 878.10/x
3. Step 3: Cross multiply
   2,522.45x = 3,784.76 × 878.10
4. Step 4: Simplify right side
   2,522.45x = 3,323,397.76
5. Step 5: Solve for x
   x = 3,323,397.76/2,522.45
6. Step 6: Final answer
   x = 1,317.53