Finding the Fourth Proportional to 1,559.39, 2,152.05 and 896.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.39 : 2,152.05 = 896.31 : x
2. Step 2: Convert to fraction form
   1,559.39/2,152.05 = 896.31/x
3. Step 3: Cross multiply
   1,559.39x = 2,152.05 × 896.31
4. Step 4: Simplify right side
   1,559.39x = 1,928,894.07
5. Step 5: Solve for x
   x = 1,928,894.07/1,559.39
6. Step 6: Final answer
   x = 1,236.95