Finding the Fourth Proportional to 2,774.21, 3,828.33 and 1,515.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,774.21 : 3,828.33 = 1,515.29 : x
2. Step 2: Convert to fraction form
   2,774.21/3,828.33 = 1,515.29/x
3. Step 3: Cross multiply
   2,774.21x = 3,828.33 × 1,515.29
4. Step 4: Simplify right side
   2,774.21x = 5,801,011.02
5. Step 5: Solve for x
   x = 5,801,011.02/2,774.21
6. Step 6: Final answer
   x = 2,091.05