Finding the Fourth Proportional to 1,253.54, 1,729.86 and 693.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.54 : 1,729.86 = 693.98 : x
2. Step 2: Convert to fraction form
   1,253.54/1,729.86 = 693.98/x
3. Step 3: Cross multiply
   1,253.54x = 1,729.86 × 693.98
4. Step 4: Simplify right side
   1,253.54x = 1,200,483.92
5. Step 5: Solve for x
   x = 1,200,483.92/1,253.54
6. Step 6: Final answer
   x = 957.67