Finding the Fourth Proportional to 3,870.34, 5,803.59 and 2,759.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.34 : 5,803.59 = 2,759.15 : x
2. Step 2: Convert to fraction form
   3,870.34/5,803.59 = 2,759.15/x
3. Step 3: Cross multiply
   3,870.34x = 5,803.59 × 2,759.15
4. Step 4: Simplify right side
   3,870.34x = 16,012,975.35
5. Step 5: Solve for x
   x = 16,012,975.35/3,870.34
6. Step 6: Final answer
   x = 4,137.36