Finding the Fourth Proportional to 2,369.72, 3,270.21 and 1,321.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,369.72 : 3,270.21 = 1,321.79 : x
2. Step 2: Convert to fraction form
   2,369.72/3,270.21 = 1,321.79/x
3. Step 3: Cross multiply
   2,369.72x = 3,270.21 × 1,321.79
4. Step 4: Simplify right side
   2,369.72x = 4,322,514.52
5. Step 5: Solve for x
   x = 4,322,514.52/2,369.72
6. Step 6: Final answer
   x = 1,824.07