Finding the Fourth Proportional to 2,142.82, 2,958.42 and 1,358.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.82 : 2,958.42 = 1,358.20 : x
2. Step 2: Convert to fraction form
   2,142.82/2,958.42 = 1,358.20/x
3. Step 3: Cross multiply
   2,142.82x = 2,958.42 × 1,358.20
4. Step 4: Simplify right side
   2,142.82x = 4,018,126.04
5. Step 5: Solve for x
   x = 4,018,126.04/2,142.82
6. Step 6: Final answer
   x = 1,875.16