Finding the Fourth Proportional to 2,339.67, 3,509.10 and 878.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.67 : 3,509.10 = 878.52 : x
2. Step 2: Convert to fraction form
   2,339.67/3,509.10 = 878.52/x
3. Step 3: Cross multiply
   2,339.67x = 3,509.10 × 878.52
4. Step 4: Simplify right side
   2,339.67x = 3,082,814.53
5. Step 5: Solve for x
   x = 3,082,814.53/2,339.67
6. Step 6: Final answer
   x = 1,317.63