Finding the Fourth Proportional to 2,057.67, 3,086.55 and 903.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.67 : 3,086.55 = 903.42 : x
2. Step 2: Convert to fraction form
   2,057.67/3,086.55 = 903.42/x
3. Step 3: Cross multiply
   2,057.67x = 3,086.55 × 903.42
4. Step 4: Simplify right side
   2,057.67x = 2,788,451.00
5. Step 5: Solve for x
   x = 2,788,451.00/2,057.67
6. Step 6: Final answer
   x = 1,355.15