Finding the Fourth Proportional to 2,370.72, 3,271.36 and 1,322.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,370.72 : 3,271.36 = 1,322.88 : x
2. Step 2: Convert to fraction form
   2,370.72/3,271.36 = 1,322.88/x
3. Step 3: Cross multiply
   2,370.72x = 3,271.36 × 1,322.88
4. Step 4: Simplify right side
   2,370.72x = 4,327,616.72
5. Step 5: Solve for x
   x = 4,327,616.72/2,370.72
6. Step 6: Final answer
   x = 1,825.44