Finding the Fourth Proportional to 1,191.75, 1,644.49 and 694.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.75 : 1,644.49 = 694.49 : x
2. Step 2: Convert to fraction form
   1,191.75/1,644.49 = 694.49/x
3. Step 3: Cross multiply
   1,191.75x = 1,644.49 × 694.49
4. Step 4: Simplify right side
   1,191.75x = 1,142,081.86
5. Step 5: Solve for x
   x = 1,142,081.86/1,191.75
6. Step 6: Final answer
   x = 958.32