Finding the Fourth Proportional to 3,870.84, 5,804.34 and 2,759.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.84 : 5,804.34 = 2,759.65 : x
2. Step 2: Convert to fraction form
   3,870.84/5,804.34 = 2,759.65/x
3. Step 3: Cross multiply
   3,870.84x = 5,804.34 × 2,759.65
4. Step 4: Simplify right side
   3,870.84x = 16,017,946.88
5. Step 5: Solve for x
   x = 16,017,946.88/3,870.84
6. Step 6: Final answer
   x = 4,138.11