Finding the Fourth Proportional to 2,145.34, 2,960.72 and 1,201.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.34 : 2,960.72 = 1,201.23 : x
2. Step 2: Convert to fraction form
   2,145.34/2,960.72 = 1,201.23/x
3. Step 3: Cross multiply
   2,145.34x = 2,960.72 × 1,201.23
4. Step 4: Simplify right side
   2,145.34x = 3,556,505.69
5. Step 5: Solve for x
   x = 3,556,505.69/2,145.34
6. Step 6: Final answer
   x = 1,657.78