Finding the Fourth Proportional to 1,560.45, 2,153.85 and 897.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.45 : 2,153.85 = 897.37 : x
2. Step 2: Convert to fraction form
   1,560.45/2,153.85 = 897.37/x
3. Step 3: Cross multiply
   1,560.45x = 2,153.85 × 897.37
4. Step 4: Simplify right side
   1,560.45x = 1,932,795.89
5. Step 5: Solve for x
   x = 1,932,795.89/1,560.45
6. Step 6: Final answer
   x = 1,238.61