Finding the Fourth Proportional to 1,559.87, 2,152.55 and 896.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.87 : 2,152.55 = 896.57 : x
2. Step 2: Convert to fraction form
   1,559.87/2,152.55 = 896.57/x
3. Step 3: Cross multiply
   1,559.87x = 2,152.55 × 896.57
4. Step 4: Simplify right side
   1,559.87x = 1,929,907.27
5. Step 5: Solve for x
   x = 1,929,907.27/1,559.87
6. Step 6: Final answer
   x = 1,237.22