Finding the Fourth Proportional to 2,523.45, 3,782.61 and 879.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,523.45 : 3,782.61 = 879.57 : x
2. Step 2: Convert to fraction form
   2,523.45/3,782.61 = 879.57/x
3. Step 3: Cross multiply
   2,523.45x = 3,782.61 × 879.57
4. Step 4: Simplify right side
   2,523.45x = 3,327,070.28
5. Step 5: Solve for x
   x = 3,327,070.28/2,523.45
6. Step 6: Final answer
   x = 1,318.46