Finding the Fourth Proportional to 2,700.17, 4,048.62 and 1,057.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,700.17 : 4,048.62 = 1,057.49 : x
2. Step 2: Convert to fraction form
   2,700.17/4,048.62 = 1,057.49/x
3. Step 3: Cross multiply
   2,700.17x = 4,048.62 × 1,057.49
4. Step 4: Simplify right side
   2,700.17x = 4,281,354.92
5. Step 5: Solve for x
   x = 4,281,354.92/2,700.17
6. Step 6: Final answer
   x = 1,585.59