Finding the Fourth Proportional to 875.69, 1,312.72 and 694.25

Step by Step Solution

1. Step 1: Write the proportion equation
   875.69 : 1,312.72 = 694.25 : x
2. Step 2: Convert to fraction form
   875.69/1,312.72 = 694.25/x
3. Step 3: Cross multiply
   875.69x = 1,312.72 × 694.25
4. Step 4: Simplify right side
   875.69x = 911,355.86
5. Step 5: Solve for x
   x = 911,355.86/875.69
6. Step 6: Final answer
   x = 1,040.73