Finding the Fourth Proportional to 3,571.06, 5,355.34 and 1,071.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.06 : 5,355.34 = 1,071.51 : x
2. Step 2: Convert to fraction form
   3,571.06/5,355.34 = 1,071.51/x
3. Step 3: Cross multiply
   3,571.06x = 5,355.34 × 1,071.51
4. Step 4: Simplify right side
   3,571.06x = 5,738,300.36
5. Step 5: Solve for x
   x = 5,738,300.36/3,571.06
6. Step 6: Final answer
   x = 1,606.89