Finding the Fourth Proportional to 1,235.89, 1,705.50 and 711.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,235.89 : 1,705.50 = 711.94 : x
2. Step 2: Convert to fraction form
   1,235.89/1,705.50 = 711.94/x
3. Step 3: Cross multiply
   1,235.89x = 1,705.50 × 711.94
4. Step 4: Simplify right side
   1,235.89x = 1,214,213.67
5. Step 5: Solve for x
   x = 1,214,213.67/1,235.89
6. Step 6: Final answer
   x = 982.46