Finding the Fourth Proportional to 2,580.30, 3,870.72 and 848.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.30 : 3,870.72 = 848.52 : x
2. Step 2: Convert to fraction form
   2,580.30/3,870.72 = 848.52/x
3. Step 3: Cross multiply
   2,580.30x = 3,870.72 × 848.52
4. Step 4: Simplify right side
   2,580.30x = 3,284,383.33
5. Step 5: Solve for x
   x = 3,284,383.33/2,580.30
6. Step 6: Final answer
   x = 1,272.87