Finding the Fourth Proportional to 2,057.82, 3,086.72 and 902.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.82 : 3,086.72 = 902.76 : x
2. Step 2: Convert to fraction form
   2,057.82/3,086.72 = 902.76/x
3. Step 3: Cross multiply
   2,057.82x = 3,086.72 × 902.76
4. Step 4: Simplify right side
   2,057.82x = 2,786,567.35
5. Step 5: Solve for x
   x = 2,786,567.35/2,057.82
6. Step 6: Final answer
   x = 1,354.14