Finding the Fourth Proportional to 2,086.47, 3,112.11 and 1,774.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.47 : 3,112.11 = 1,774.85 : x
2. Step 2: Convert to fraction form
   2,086.47/3,112.11 = 1,774.85/x
3. Step 3: Cross multiply
   2,086.47x = 3,112.11 × 1,774.85
4. Step 4: Simplify right side
   2,086.47x = 5,523,512.87
5. Step 5: Solve for x
   x = 5,523,512.87/2,086.47
6. Step 6: Final answer
   x = 2,647.30