Finding the Fourth Proportional to 2,142.08, 3,214.20 and 1,031.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.08 : 3,214.20 = 1,031.24 : x
2. Step 2: Convert to fraction form
   2,142.08/3,214.20 = 1,031.24/x
3. Step 3: Cross multiply
   2,142.08x = 3,214.20 × 1,031.24
4. Step 4: Simplify right side
   2,142.08x = 3,314,611.61
5. Step 5: Solve for x
   x = 3,314,611.61/2,142.08
6. Step 6: Final answer
   x = 1,547.38