Finding the Fourth Proportional to 1,978.32, 2,963.70 and 1,198.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.32 : 2,963.70 = 1,198.56 : x
2. Step 2: Convert to fraction form
   1,978.32/2,963.70 = 1,198.56/x
3. Step 3: Cross multiply
   1,978.32x = 2,963.70 × 1,198.56
4. Step 4: Simplify right side
   1,978.32x = 3,552,172.27
5. Step 5: Solve for x
   x = 3,552,172.27/1,978.32
6. Step 6: Final answer
   x = 1,795.55