Finding the Fourth Proportional to 2,142.33, 3,213.71 and 1,031.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.33 : 3,213.71 = 1,031.42 : x
2. Step 2: Convert to fraction form
   2,142.33/3,213.71 = 1,031.42/x
3. Step 3: Cross multiply
   2,142.33x = 3,213.71 × 1,031.42
4. Step 4: Simplify right side
   2,142.33x = 3,314,663.54
5. Step 5: Solve for x
   x = 3,314,663.54/2,142.33
6. Step 6: Final answer
   x = 1,547.22