Finding the Fourth Proportional to 3,628.80, 5,443.16 and 1,031.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,628.80 : 5,443.16 = 1,031.67 : x
2. Step 2: Convert to fraction form
   3,628.80/5,443.16 = 1,031.67/x
3. Step 3: Cross multiply
   3,628.80x = 5,443.16 × 1,031.67
4. Step 4: Simplify right side
   3,628.80x = 5,615,539.72
5. Step 5: Solve for x
   x = 5,615,539.72/3,628.80
6. Step 6: Final answer
   x = 1,547.49