Finding the Fourth Proportional to 2,345.21, 3,516.51 and 959.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.21 : 3,516.51 = 959.52 : x
2. Step 2: Convert to fraction form
   2,345.21/3,516.51 = 959.52/x
3. Step 3: Cross multiply
   2,345.21x = 3,516.51 × 959.52
4. Step 4: Simplify right side
   2,345.21x = 3,374,144.09
5. Step 5: Solve for x
   x = 3,374,144.09/2,345.21
6. Step 6: Final answer
   x = 1,438.74