Finding the Fourth Proportional to 1,191.45, 1,644.24 and 694.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.45 : 1,644.24 = 694.01 : x
2. Step 2: Convert to fraction form
   1,191.45/1,644.24 = 694.01/x
3. Step 3: Cross multiply
   1,191.45x = 1,644.24 × 694.01
4. Step 4: Simplify right side
   1,191.45x = 1,141,116.47
5. Step 5: Solve for x
   x = 1,141,116.47/1,191.45
6. Step 6: Final answer
   x = 957.76