Finding the Fourth Proportional to 1,057.69, 1,459.63 and 632.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.69 : 1,459.63 = 632.75 : x
2. Step 2: Convert to fraction form
   1,057.69/1,459.63 = 632.75/x
3. Step 3: Cross multiply
   1,057.69x = 1,459.63 × 632.75
4. Step 4: Simplify right side
   1,057.69x = 923,582.82
5. Step 5: Solve for x
   x = 923,582.82/1,057.69
6. Step 6: Final answer
   x = 873.21