Finding the Fourth Proportional to 2,145.11, 2,960.84 and 1,756.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.11 : 2,960.84 = 1,756.31 : x
2. Step 2: Convert to fraction form
   2,145.11/2,960.84 = 1,756.31/x
3. Step 3: Cross multiply
   2,145.11x = 2,960.84 × 1,756.31
4. Step 4: Simplify right side
   2,145.11x = 5,200,144.12
5. Step 5: Solve for x
   x = 5,200,144.12/2,145.11
6. Step 6: Final answer
   x = 2,424.19