Finding the Fourth Proportional to 1,393.65, 1,924.54 and 897.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.65 : 1,924.54 = 897.17 : x
2. Step 2: Convert to fraction form
   1,393.65/1,924.54 = 897.17/x
3. Step 3: Cross multiply
   1,393.65x = 1,924.54 × 897.17
4. Step 4: Simplify right side
   1,393.65x = 1,726,627.69
5. Step 5: Solve for x
   x = 1,726,627.69/1,393.65
6. Step 6: Final answer
   x = 1,238.92