Finding the Fourth Proportional to 2,345.61, 3,519.56 and 959.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.61 : 3,519.56 = 959.33 : x
2. Step 2: Convert to fraction form
   2,345.61/3,519.56 = 959.33/x
3. Step 3: Cross multiply
   2,345.61x = 3,519.56 × 959.33
4. Step 4: Simplify right side
   2,345.61x = 3,376,397.10
5. Step 5: Solve for x
   x = 3,376,397.10/2,345.61
6. Step 6: Final answer
   x = 1,439.45