Finding the Fourth Proportional to 1,057.58, 1,457.42 and 746.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.58 : 1,457.42 = 746.54 : x
2. Step 2: Convert to fraction form
   1,057.58/1,457.42 = 746.54/x
3. Step 3: Cross multiply
   1,057.58x = 1,457.42 × 746.54
4. Step 4: Simplify right side
   1,057.58x = 1,088,022.33
5. Step 5: Solve for x
   x = 1,088,022.33/1,057.58
6. Step 6: Final answer
   x = 1,028.78