Finding the Fourth Proportional to 2,319.09, 3,200.27 and 1,271.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,319.09 : 3,200.27 = 1,271.15 : x
2. Step 2: Convert to fraction form
   2,319.09/3,200.27 = 1,271.15/x
3. Step 3: Cross multiply
   2,319.09x = 3,200.27 × 1,271.15
4. Step 4: Simplify right side
   2,319.09x = 4,068,023.21
5. Step 5: Solve for x
   x = 4,068,023.21/2,319.09
6. Step 6: Final answer
   x = 1,754.15