Finding the Fourth Proportional to 2,057.77, 3,087.06 and 1,084.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,057.77 : 3,087.06 = 1,084.15 : x
2. Step 2: Convert to fraction form
   2,057.77/3,087.06 = 1,084.15/x
3. Step 3: Cross multiply
   2,057.77x = 3,087.06 × 1,084.15
4. Step 4: Simplify right side
   2,057.77x = 3,346,836.10
5. Step 5: Solve for x
   x = 3,346,836.10/2,057.77
6. Step 6: Final answer
   x = 1,626.44