Finding the Fourth Proportional to 2,993.05, 4,489.87 and 1,145.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,993.05 : 4,489.87 = 1,145.71 : x
2. Step 2: Convert to fraction form
   2,993.05/4,489.87 = 1,145.71/x
3. Step 3: Cross multiply
   2,993.05x = 4,489.87 × 1,145.71
4. Step 4: Simplify right side
   2,993.05x = 5,144,088.96
5. Step 5: Solve for x
   x = 5,144,088.96/2,993.05
6. Step 6: Final answer
   x = 1,718.68