Finding the Fourth Proportional to 3,890.82, 5,830.31 and 2,851.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.82 : 5,830.31 = 2,851.52 : x
2. Step 2: Convert to fraction form
   3,890.82/5,830.31 = 2,851.52/x
3. Step 3: Cross multiply
   3,890.82x = 5,830.31 × 2,851.52
4. Step 4: Simplify right side
   3,890.82x = 16,625,223.55
5. Step 5: Solve for x
   x = 16,625,223.55/3,890.82
6. Step 6: Final answer
   x = 4,272.93