Finding the Fourth Proportional to 2,586.69, 3,894.12 and 1,770.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586.69 : 3,894.12 = 1,770.12 : x
2. Step 2: Convert to fraction form
   2,586.69/3,894.12 = 1,770.12/x
3. Step 3: Cross multiply
   2,586.69x = 3,894.12 × 1,770.12
4. Step 4: Simplify right side
   2,586.69x = 6,893,059.69
5. Step 5: Solve for x
   x = 6,893,059.69/2,586.69
6. Step 6: Final answer
   x = 2,664.82