Finding the Fourth Proportional to 1,907.82, 2,856.15 and 1,447.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907.82 : 2,856.15 = 1,447.42 : x
2. Step 2: Convert to fraction form
   1,907.82/2,856.15 = 1,447.42/x
3. Step 3: Cross multiply
   1,907.82x = 2,856.15 × 1,447.42
4. Step 4: Simplify right side
   1,907.82x = 4,134,034.35
5. Step 5: Solve for x
   x = 4,134,034.35/1,907.82
6. Step 6: Final answer
   x = 2,166.89