Finding the Fourth Proportional to 2,700.91, 4,053.18 and 1,057.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.91 : 4,053.18 = 1,057.25 : x
2. Step 2: Convert to fraction form
   2,700.91/4,053.18 = 1,057.25/x
3. Step 3: Cross multiply
   2,700.91x = 4,053.18 × 1,057.25
4. Step 4: Simplify right side
   2,700.91x = 4,285,204.29
5. Step 5: Solve for x
   x = 4,285,204.29/2,700.91
6. Step 6: Final answer
   x = 1,586.58