Finding the Fourth Proportional to 1,253.06, 1,729.32 and 693.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.06 : 1,729.32 = 693.55 : x
2. Step 2: Convert to fraction form
   1,253.06/1,729.32 = 693.55/x
3. Step 3: Cross multiply
   1,253.06x = 1,729.32 × 693.55
4. Step 4: Simplify right side
   1,253.06x = 1,199,369.89
5. Step 5: Solve for x
   x = 1,199,369.89/1,253.06
6. Step 6: Final answer
   x = 957.15