Finding the Fourth Proportional to 1,896.25, 2,841.63 and 1,072.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.25 : 2,841.63 = 1,072.78 : x
2. Step 2: Convert to fraction form
   1,896.25/2,841.63 = 1,072.78/x
3. Step 3: Cross multiply
   1,896.25x = 2,841.63 × 1,072.78
4. Step 4: Simplify right side
   1,896.25x = 3,048,443.83
5. Step 5: Solve for x
   x = 3,048,443.83/1,896.25
6. Step 6: Final answer
   x = 1,607.62