Finding the Fourth Proportional to 2,570.78, 3,851.34 and 2,051.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.78 : 3,851.34 = 2,051.36 : x
2. Step 2: Convert to fraction form
   2,570.78/3,851.34 = 2,051.36/x
3. Step 3: Cross multiply
   2,570.78x = 3,851.34 × 2,051.36
4. Step 4: Simplify right side
   2,570.78x = 7,900,484.82
5. Step 5: Solve for x
   x = 7,900,484.82/2,570.78
6. Step 6: Final answer
   x = 3,073.19