Finding the Fourth Proportional to 1,571.19, 2,168.81 and 1,047.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.19 : 2,168.81 = 1,047.25 : x
2. Step 2: Convert to fraction form
   1,571.19/2,168.81 = 1,047.25/x
3. Step 3: Cross multiply
   1,571.19x = 2,168.81 × 1,047.25
4. Step 4: Simplify right side
   1,571.19x = 2,271,286.27
5. Step 5: Solve for x
   x = 2,271,286.27/1,571.19
6. Step 6: Final answer
   x = 1,445.58