Finding the Fourth Proportional to 2,580.84, 3,868.74 and 848.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.84 : 3,868.74 = 848.34 : x
2. Step 2: Convert to fraction form
   2,580.84/3,868.74 = 848.34/x
3. Step 3: Cross multiply
   2,580.84x = 3,868.74 × 848.34
4. Step 4: Simplify right side
   2,580.84x = 3,282,006.89
5. Step 5: Solve for x
   x = 3,282,006.89/2,580.84
6. Step 6: Final answer
   x = 1,271.68