Finding the Fourth Proportional to 2,129.32, 3,191.55 and 960.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129.32 : 3,191.55 = 960.22 : x
2. Step 2: Convert to fraction form
   2,129.32/3,191.55 = 960.22/x
3. Step 3: Cross multiply
   2,129.32x = 3,191.55 × 960.22
4. Step 4: Simplify right side
   2,129.32x = 3,064,590.14
5. Step 5: Solve for x
   x = 3,064,590.14/2,129.32
6. Step 6: Final answer
   x = 1,439.23