Finding the Fourth Proportional to 1,556.28, 2,146.69 and 1,369.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.28 : 2,146.69 = 1,369.78 : x
2. Step 2: Convert to fraction form
   1,556.28/2,146.69 = 1,369.78/x
3. Step 3: Cross multiply
   1,556.28x = 2,146.69 × 1,369.78
4. Step 4: Simplify right side
   1,556.28x = 2,940,493.03
5. Step 5: Solve for x
   x = 2,940,493.03/1,556.28
6. Step 6: Final answer
   x = 1,889.44