Finding the Fourth Proportional to 2,149.10, 3,224.10 and 688.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149.10 : 3,224.10 = 688.27 : x
2. Step 2: Convert to fraction form
   2,149.10/3,224.10 = 688.27/x
3. Step 3: Cross multiply
   2,149.10x = 3,224.10 × 688.27
4. Step 4: Simplify right side
   2,149.10x = 2,219,051.31
5. Step 5: Solve for x
   x = 2,219,051.31/2,149.10
6. Step 6: Final answer
   x = 1,032.55