Finding the Fourth Proportional to 1,870.82, 2,804.57 and 774.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.82 : 2,804.57 = 774.49 : x
2. Step 2: Convert to fraction form
   1,870.82/2,804.57 = 774.49/x
3. Step 3: Cross multiply
   1,870.82x = 2,804.57 × 774.49
4. Step 4: Simplify right side
   1,870.82x = 2,172,100.54
5. Step 5: Solve for x
   x = 2,172,100.54/1,870.82
6. Step 6: Final answer
   x = 1,161.04