Finding the Fourth Proportional to 1,231.96, 1,700.31 and 734.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.96 : 1,700.31 = 734.89 : x
2. Step 2: Convert to fraction form
   1,231.96/1,700.31 = 734.89/x
3. Step 3: Cross multiply
   1,231.96x = 1,700.31 × 734.89
4. Step 4: Simplify right side
   1,231.96x = 1,249,540.82
5. Step 5: Solve for x
   x = 1,249,540.82/1,231.96
6. Step 6: Final answer
   x = 1,014.27