Finding the Fourth Proportional to 1,560.97, 2,153.89 and 897.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.97 : 2,153.89 = 897.89 : x
2. Step 2: Convert to fraction form
   1,560.97/2,153.89 = 897.89/x
3. Step 3: Cross multiply
   1,560.97x = 2,153.89 × 897.89
4. Step 4: Simplify right side
   1,560.97x = 1,933,946.65
5. Step 5: Solve for x
   x = 1,933,946.65/1,560.97
6. Step 6: Final answer
   x = 1,238.94