Finding the Fourth Proportional to 1,297.24, 1,955.59 and 1,213.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.24 : 1,955.59 = 1,213.72 : x
2. Step 2: Convert to fraction form
   1,297.24/1,955.59 = 1,213.72/x
3. Step 3: Cross multiply
   1,297.24x = 1,955.59 × 1,213.72
4. Step 4: Simplify right side
   1,297.24x = 2,373,538.69
5. Step 5: Solve for x
   x = 2,373,538.69/1,297.24
6. Step 6: Final answer
   x = 1,829.68