Finding the Fourth Proportional to 2,060.30, 2,843.21 and 1,128.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,060.30 : 2,843.21 = 1,128.78 : x
2. Step 2: Convert to fraction form
   2,060.30/2,843.21 = 1,128.78/x
3. Step 3: Cross multiply
   2,060.30x = 2,843.21 × 1,128.78
4. Step 4: Simplify right side
   2,060.30x = 3,209,358.58
5. Step 5: Solve for x
   x = 3,209,358.58/2,060.30
6. Step 6: Final answer
   x = 1,557.71