Finding the Fourth Proportional to 1,159.74, 1,601.37 and 897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,159.74 : 1,601.37 = 897.30 : x
2. Step 2: Convert to fraction form
   1,159.74/1,601.37 = 897.30/x
3. Step 3: Cross multiply
   1,159.74x = 1,601.37 × 897.30
4. Step 4: Simplify right side
   1,159.74x = 1,436,909.30
5. Step 5: Solve for x
   x = 1,436,909.30/1,159.74
6. Step 6: Final answer
   x = 1,238.99