Finding the Fourth Proportional to 2,342.72, 3,513.96 and 699.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,342.72 : 3,513.96 = 699.28 : x
2. Step 2: Convert to fraction form
   2,342.72/3,513.96 = 699.28/x
3. Step 3: Cross multiply
   2,342.72x = 3,513.96 × 699.28
4. Step 4: Simplify right side
   2,342.72x = 2,457,241.95
5. Step 5: Solve for x
   x = 2,457,241.95/2,342.72
6. Step 6: Final answer
   x = 1,048.88