Finding the Fourth Proportional to 2,627.53, 3,940.84 and 961.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.53 : 3,940.84 = 961.31 : x
2. Step 2: Convert to fraction form
   2,627.53/3,940.84 = 961.31/x
3. Step 3: Cross multiply
   2,627.53x = 3,940.84 × 961.31
4. Step 4: Simplify right side
   2,627.53x = 3,788,379.95
5. Step 5: Solve for x
   x = 3,788,379.95/2,627.53
6. Step 6: Final answer
   x = 1,441.80