Finding the Fourth Proportional to 2,431.72, 3,648.12 and 700.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.72 : 3,648.12 = 700.28 : x
2. Step 2: Convert to fraction form
   2,431.72/3,648.12 = 700.28/x
3. Step 3: Cross multiply
   2,431.72x = 3,648.12 × 700.28
4. Step 4: Simplify right side
   2,431.72x = 2,554,705.47
5. Step 5: Solve for x
   x = 2,554,705.47/2,431.72
6. Step 6: Final answer
   x = 1,050.58