Finding the Fourth Proportional to 1,338.97, 1,848.50 and 897.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.97 : 1,848.50 = 897.63 : x
2. Step 2: Convert to fraction form
   1,338.97/1,848.50 = 897.63/x
3. Step 3: Cross multiply
   1,338.97x = 1,848.50 × 897.63
4. Step 4: Simplify right side
   1,338.97x = 1,659,255.32
5. Step 5: Solve for x
   x = 1,659,255.32/1,338.97
6. Step 6: Final answer
   x = 1,239.20