Finding the Fourth Proportional to 1,605.52, 2,215.59 and 897.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.52 : 2,215.59 = 897.41 : x
2. Step 2: Convert to fraction form
   1,605.52/2,215.59 = 897.41/x
3. Step 3: Cross multiply
   1,605.52x = 2,215.59 × 897.41
4. Step 4: Simplify right side
   1,605.52x = 1,988,294.80
5. Step 5: Solve for x
   x = 1,988,294.80/1,605.52
6. Step 6: Final answer
   x = 1,238.41