Finding the Fourth Proportional to 3,411.54, 5,117.88 and 1,071.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.54 : 5,117.88 = 1,071.06 : x
2. Step 2: Convert to fraction form
   3,411.54/5,117.88 = 1,071.06/x
3. Step 3: Cross multiply
   3,411.54x = 5,117.88 × 1,071.06
4. Step 4: Simplify right side
   3,411.54x = 5,481,556.55
5. Step 5: Solve for x
   x = 5,481,556.55/3,411.54
6. Step 6: Final answer
   x = 1,606.77