Finding the Fourth Proportional to 1,253.56, 1,729.89 and 694.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.56 : 1,729.89 = 694.07 : x
2. Step 2: Convert to fraction form
   1,253.56/1,729.89 = 694.07/x
3. Step 3: Cross multiply
   1,253.56x = 1,729.89 × 694.07
4. Step 4: Simplify right side
   1,253.56x = 1,200,664.75
5. Step 5: Solve for x
   x = 1,200,664.75/1,253.56
6. Step 6: Final answer
   x = 957.80