Finding the Fourth Proportional to 2,145.25, 2,960.99 and 1,214.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.25 : 2,960.99 = 1,214.29 : x
2. Step 2: Convert to fraction form
   2,145.25/2,960.99 = 1,214.29/x
3. Step 3: Cross multiply
   2,145.25x = 2,960.99 × 1,214.29
4. Step 4: Simplify right side
   2,145.25x = 3,595,500.55
5. Step 5: Solve for x
   x = 3,595,500.55/2,145.25
6. Step 6: Final answer
   x = 1,676.03