Finding the Fourth Proportional to 1,560.23, 2,152.94 and 897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.23 : 2,152.94 = 897.30 : x
2. Step 2: Convert to fraction form
   1,560.23/2,152.94 = 897.30/x
3. Step 3: Cross multiply
   1,560.23x = 2,152.94 × 897.30
4. Step 4: Simplify right side
   1,560.23x = 1,931,833.06
5. Step 5: Solve for x
   x = 1,931,833.06/1,560.23
6. Step 6: Final answer
   x = 1,238.17