Finding the Fourth Proportional to 2,072.46, 2,860.06 and 1,128.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.46 : 2,860.06 = 1,128.26 : x
2. Step 2: Convert to fraction form
   2,072.46/2,860.06 = 1,128.26/x
3. Step 3: Cross multiply
   2,072.46x = 2,860.06 × 1,128.26
4. Step 4: Simplify right side
   2,072.46x = 3,226,891.30
5. Step 5: Solve for x
   x = 3,226,891.30/2,072.46
6. Step 6: Final answer
   x = 1,557.03