Finding the Fourth Proportional to 3,571.56, 5,356.35 and 1,072.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.56 : 5,356.35 = 1,072.17 : x
2. Step 2: Convert to fraction form
   3,571.56/5,356.35 = 1,072.17/x
3. Step 3: Cross multiply
   3,571.56x = 5,356.35 × 1,072.17
4. Step 4: Simplify right side
   3,571.56x = 5,742,917.78
5. Step 5: Solve for x
   x = 5,742,917.78/3,571.56
6. Step 6: Final answer
   x = 1,607.96