Finding the Fourth Proportional to 1,978.14, 2,729.39 and 1,181.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.14 : 2,729.39 = 1,181.32 : x
2. Step 2: Convert to fraction form
   1,978.14/2,729.39 = 1,181.32/x
3. Step 3: Cross multiply
   1,978.14x = 2,729.39 × 1,181.32
4. Step 4: Simplify right side
   1,978.14x = 3,224,294.48
5. Step 5: Solve for x
   x = 3,224,294.48/1,978.14
6. Step 6: Final answer
   x = 1,629.96