Finding the Fourth Proportional to 1,191.74, 1,644.61 and 694.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.74 : 1,644.61 = 694.46 : x
2. Step 2: Convert to fraction form
   1,191.74/1,644.61 = 694.46/x
3. Step 3: Cross multiply
   1,191.74x = 1,644.61 × 694.46
4. Step 4: Simplify right side
   1,191.74x = 1,142,110.31
5. Step 5: Solve for x
   x = 1,142,110.31/1,191.74
6. Step 6: Final answer
   x = 958.35