Finding the Fourth Proportional to 2,641.89, 3,962.53 and 694.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.89 : 3,962.53 = 694.25 : x
2. Step 2: Convert to fraction form
   2,641.89/3,962.53 = 694.25/x
3. Step 3: Cross multiply
   2,641.89x = 3,962.53 × 694.25
4. Step 4: Simplify right side
   2,641.89x = 2,750,964.90
5. Step 5: Solve for x
   x = 2,750,964.90/2,641.89
6. Step 6: Final answer
   x = 1,041.29