Finding the Fourth Proportional to 2,162.24, 3,241.86 and 929.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.24 : 3,241.86 = 929.28 : x
2. Step 2: Convert to fraction form
   2,162.24/3,241.86 = 929.28/x
3. Step 3: Cross multiply
   2,162.24x = 3,241.86 × 929.28
4. Step 4: Simplify right side
   2,162.24x = 3,012,595.66
5. Step 5: Solve for x
   x = 3,012,595.66/2,162.24
6. Step 6: Final answer
   x = 1,393.28