Finding the Fourth Proportional to 1,978.74, 2,968.18 and 1,517.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.74 : 2,968.18 = 1,517.36 : x
2. Step 2: Convert to fraction form
   1,978.74/2,968.18 = 1,517.36/x
3. Step 3: Cross multiply
   1,978.74x = 2,968.18 × 1,517.36
4. Step 4: Simplify right side
   1,978.74x = 4,503,797.60
5. Step 5: Solve for x
   x = 4,503,797.60/1,978.74
6. Step 6: Final answer
   x = 2,276.09