Finding the Fourth Proportional to 2,020.34, 3,031.12 and 925.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.34 : 3,031.12 = 925.63 : x
2. Step 2: Convert to fraction form
   2,020.34/3,031.12 = 925.63/x
3. Step 3: Cross multiply
   2,020.34x = 3,031.12 × 925.63
4. Step 4: Simplify right side
   2,020.34x = 2,805,689.18
5. Step 5: Solve for x
   x = 2,805,689.18/2,020.34
6. Step 6: Final answer
   x = 1,388.72