Finding the Fourth Proportional to 2,145.31, 2,960.54 and 1,201.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.31 : 2,960.54 = 1,201.14 : x
2. Step 2: Convert to fraction form
   2,145.31/2,960.54 = 1,201.14/x
3. Step 3: Cross multiply
   2,145.31x = 2,960.54 × 1,201.14
4. Step 4: Simplify right side
   2,145.31x = 3,556,024.41
5. Step 5: Solve for x
   x = 3,556,024.41/2,145.31
6. Step 6: Final answer
   x = 1,657.58