Finding the Fourth Proportional to 1,253.72, 1,730.13 and 694.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.72 : 1,730.13 = 694.15 : x
2. Step 2: Convert to fraction form
   1,253.72/1,730.13 = 694.15/x
3. Step 3: Cross multiply
   1,253.72x = 1,730.13 × 694.15
4. Step 4: Simplify right side
   1,253.72x = 1,200,969.74
5. Step 5: Solve for x
   x = 1,200,969.74/1,253.72
6. Step 6: Final answer
   x = 957.93