Finding the Fourth Proportional to 1,978.26, 2,966.82 and 1,145.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.26 : 2,966.82 = 1,145.58 : x
2. Step 2: Convert to fraction form
   1,978.26/2,966.82 = 1,145.58/x
3. Step 3: Cross multiply
   1,978.26x = 2,966.82 × 1,145.58
4. Step 4: Simplify right side
   1,978.26x = 3,398,729.66
5. Step 5: Solve for x
   x = 3,398,729.66/1,978.26
6. Step 6: Final answer
   x = 1,718.04