Finding the Fourth Proportional to 1,191.94, 1,644.84 and 694.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.94 : 1,644.84 = 694.60 : x
2. Step 2: Convert to fraction form
   1,191.94/1,644.84 = 694.60/x
3. Step 3: Cross multiply
   1,191.94x = 1,644.84 × 694.60
4. Step 4: Simplify right side
   1,191.94x = 1,142,505.86
5. Step 5: Solve for x
   x = 1,142,505.86/1,191.94
6. Step 6: Final answer
   x = 958.53