Finding the Fourth Proportional to 1,978.98, 2,968.58 and 883.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.98 : 2,968.58 = 883.42 : x
2. Step 2: Convert to fraction form
   1,978.98/2,968.58 = 883.42/x
3. Step 3: Cross multiply
   1,978.98x = 2,968.58 × 883.42
4. Step 4: Simplify right side
   1,978.98x = 2,622,502.94
5. Step 5: Solve for x
   x = 2,622,502.94/1,978.98
6. Step 6: Final answer
   x = 1,325.18