Finding the Fourth Proportional to 1,897.40, 2,844.73 and 1,279.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.40 : 2,844.73 = 1,279.56 : x
2. Step 2: Convert to fraction form
   1,897.40/2,844.73 = 1,279.56/x
3. Step 3: Cross multiply
   1,897.40x = 2,844.73 × 1,279.56
4. Step 4: Simplify right side
   1,897.40x = 3,640,002.72
5. Step 5: Solve for x
   x = 3,640,002.72/1,897.40
6. Step 6: Final answer
   x = 1,918.42