Finding the Fourth Proportional to 2,270, 3,129.72 and 1,679.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270 : 3,129.72 = 1,679.52 : x
2. Step 2: Convert to fraction form
   2,270/3,129.72 = 1,679.52/x
3. Step 3: Cross multiply
   2,270x = 3,129.72 × 1,679.52
4. Step 4: Simplify right side
   2,270x = 5,256,427.33
5. Step 5: Solve for x
   x = 5,256,427.33/2,270
6. Step 6: Final answer
   x = 2,315.61