Finding the Fourth Proportional to 2,150.08, 3,224.32 and 688.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.08 : 3,224.32 = 688.96 : x
2. Step 2: Convert to fraction form
   2,150.08/3,224.32 = 688.96/x
3. Step 3: Cross multiply
   2,150.08x = 3,224.32 × 688.96
4. Step 4: Simplify right side
   2,150.08x = 2,221,427.51
5. Step 5: Solve for x
   x = 2,221,427.51/2,150.08
6. Step 6: Final answer
   x = 1,033.18