Finding the Fourth Proportional to 911.98, 1,366.69 and 705.59

Step by Step Solution

1. Step 1: Write the proportion equation
   911.98 : 1,366.69 = 705.59 : x
2. Step 2: Convert to fraction form
   911.98/1,366.69 = 705.59/x
3. Step 3: Cross multiply
   911.98x = 1,366.69 × 705.59
4. Step 4: Simplify right side
   911.98x = 964,313.83
5. Step 5: Solve for x
   x = 964,313.83/911.98
6. Step 6: Final answer
   x = 1,057.38