Finding the Fourth Proportional to 3,628.78, 5,443.71 and 1,031.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,628.78 : 5,443.71 = 1,031.65 : x
2. Step 2: Convert to fraction form
   3,628.78/5,443.71 = 1,031.65/x
3. Step 3: Cross multiply
   3,628.78x = 5,443.71 × 1,031.65
4. Step 4: Simplify right side
   3,628.78x = 5,616,003.42
5. Step 5: Solve for x
   x = 5,616,003.42/3,628.78
6. Step 6: Final answer
   x = 1,547.63