Finding the Fourth Proportional to 1,978.12, 2,963.85 and 1,195.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.12 : 2,963.85 = 1,195.74 : x
2. Step 2: Convert to fraction form
   1,978.12/2,963.85 = 1,195.74/x
3. Step 3: Cross multiply
   1,978.12x = 2,963.85 × 1,195.74
4. Step 4: Simplify right side
   1,978.12x = 3,543,993.82
5. Step 5: Solve for x
   x = 3,543,993.82/1,978.12
6. Step 6: Final answer
   x = 1,791.59