Finding the Fourth Proportional to 2,019.74, 3,028.52 and 1,187.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.74 : 3,028.52 = 1,187.09 : x
2. Step 2: Convert to fraction form
   2,019.74/3,028.52 = 1,187.09/x
3. Step 3: Cross multiply
   2,019.74x = 3,028.52 × 1,187.09
4. Step 4: Simplify right side
   2,019.74x = 3,595,124.99
5. Step 5: Solve for x
   x = 3,595,124.99/2,019.74
6. Step 6: Final answer
   x = 1,780.00