Finding the Fourth Proportional to 2,641.86, 3,962.55 and 694.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.86 : 3,962.55 = 694.26 : x
2. Step 2: Convert to fraction form
   2,641.86/3,962.55 = 694.26/x
3. Step 3: Cross multiply
   2,641.86x = 3,962.55 × 694.26
4. Step 4: Simplify right side
   2,641.86x = 2,751,039.96
5. Step 5: Solve for x
   x = 2,751,039.96/2,641.86
6. Step 6: Final answer
   x = 1,041.33