Finding the Fourth Proportional to 2,522.50, 3,784.42 and 879.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,522.50 : 3,784.42 = 879.12 : x
2. Step 2: Convert to fraction form
   2,522.50/3,784.42 = 879.12/x
3. Step 3: Cross multiply
   2,522.50x = 3,784.42 × 879.12
4. Step 4: Simplify right side
   2,522.50x = 3,326,959.31
5. Step 5: Solve for x
   x = 3,326,959.31/2,522.50
6. Step 6: Final answer
   x = 1,318.91