Finding the Fourth Proportional to 2,727.53, 4,091.50 and 779.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,727.53 : 4,091.50 = 779.89 : x
2. Step 2: Convert to fraction form
   2,727.53/4,091.50 = 779.89/x
3. Step 3: Cross multiply
   2,727.53x = 4,091.50 × 779.89
4. Step 4: Simplify right side
   2,727.53x = 3,190,907.76
5. Step 5: Solve for x
   x = 3,190,907.76/2,727.53
6. Step 6: Final answer
   x = 1,169.89