Finding the Fourth Proportional to 1,896.27, 2,616.86 and 1,057.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,896.27 : 2,616.86 = 1,057.03 : x
2. Step 2: Convert to fraction form
   1,896.27/2,616.86 = 1,057.03/x
3. Step 3: Cross multiply
   1,896.27x = 2,616.86 × 1,057.03
4. Step 4: Simplify right side
   1,896.27x = 2,766,097.61
5. Step 5: Solve for x
   x = 2,766,097.61/1,896.27
6. Step 6: Final answer
   x = 1,458.70