Finding the Fourth Proportional to 2,038.72, 3,057 and 1,878.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.72 : 3,057 = 1,878.88 : x
2. Step 2: Convert to fraction form
   2,038.72/3,057 = 1,878.88/x
3. Step 3: Cross multiply
   2,038.72x = 3,057 × 1,878.88
4. Step 4: Simplify right side
   2,038.72x = 5,743,736.16
5. Step 5: Solve for x
   x = 5,743,736.16/2,038.72
6. Step 6: Final answer
   x = 2,817.32