Finding the Fourth Proportional to 2,131.81, 3,195.01 and 960.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.81 : 3,195.01 = 960.56 : x
2. Step 2: Convert to fraction form
   2,131.81/3,195.01 = 960.56/x
3. Step 3: Cross multiply
   2,131.81x = 3,195.01 × 960.56
4. Step 4: Simplify right side
   2,131.81x = 3,068,998.81
5. Step 5: Solve for x
   x = 3,068,998.81/2,131.81
6. Step 6: Final answer
   x = 1,439.62