Finding the Fourth Proportional to 1,377.82, 1,902.81 and 1,180.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.82 : 1,902.81 = 1,180.18 : x
2. Step 2: Convert to fraction form
   1,377.82/1,902.81 = 1,180.18/x
3. Step 3: Cross multiply
   1,377.82x = 1,902.81 × 1,180.18
4. Step 4: Simplify right side
   1,377.82x = 2,245,658.31
5. Step 5: Solve for x
   x = 2,245,658.31/1,377.82
6. Step 6: Final answer
   x = 1,629.86