Finding the Fourth Proportional to 3,417.31, 5,127.59 and 1,443.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,417.31 : 5,127.59 = 1,443.40 : x
2. Step 2: Convert to fraction form
   3,417.31/5,127.59 = 1,443.40/x
3. Step 3: Cross multiply
   3,417.31x = 5,127.59 × 1,443.40
4. Step 4: Simplify right side
   3,417.31x = 7,401,154.20
5. Step 5: Solve for x
   x = 7,401,154.20/3,417.31
6. Step 6: Final answer
   x = 2,165.78