Finding the Fourth Proportional to 1,229.98, 1,697.25 and 705.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229.98 : 1,697.25 = 705.91 : x
2. Step 2: Convert to fraction form
   1,229.98/1,697.25 = 705.91/x
3. Step 3: Cross multiply
   1,229.98x = 1,697.25 × 705.91
4. Step 4: Simplify right side
   1,229.98x = 1,198,104.51
5. Step 5: Solve for x
   x = 1,198,104.51/1,229.98
6. Step 6: Final answer
   x = 974.09