Finding the Fourth Proportional to 2,143.89, 2,958.89 and 1,358.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.89 : 2,958.89 = 1,358.01 : x
2. Step 2: Convert to fraction form
   2,143.89/2,958.89 = 1,358.01/x
3. Step 3: Cross multiply
   2,143.89x = 2,958.89 × 1,358.01
4. Step 4: Simplify right side
   2,143.89x = 4,018,202.21
5. Step 5: Solve for x
   x = 4,018,202.21/2,143.89
6. Step 6: Final answer
   x = 1,874.26