Finding the Fourth Proportional to 1,560.72, 2,153.35 and 897.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.72 : 2,153.35 = 897.52 : x
2. Step 2: Convert to fraction form
   1,560.72/2,153.35 = 897.52/x
3. Step 3: Cross multiply
   1,560.72x = 2,153.35 × 897.52
4. Step 4: Simplify right side
   1,560.72x = 1,932,674.69
5. Step 5: Solve for x
   x = 1,932,674.69/1,560.72
6. Step 6: Final answer
   x = 1,238.32