Finding the Fourth Proportional to 1,978.34, 2,966.04 and 1,198.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.34 : 2,966.04 = 1,198.17 : x
2. Step 2: Convert to fraction form
   1,978.34/2,966.04 = 1,198.17/x
3. Step 3: Cross multiply
   1,978.34x = 2,966.04 × 1,198.17
4. Step 4: Simplify right side
   1,978.34x = 3,553,820.15
5. Step 5: Solve for x
   x = 3,553,820.15/1,978.34
6. Step 6: Final answer
   x = 1,796.37