Finding the Fourth Proportional to 5,871.38, 8,808.69 and 1,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,871.38 : 8,808.69 = 1,978.52 : x
2. Step 2: Convert to fraction form
   5,871.38/8,808.69 = 1,978.52/x
3. Step 3: Cross multiply
   5,871.38x = 8,808.69 × 1,978.52
4. Step 4: Simplify right side
   5,871.38x = 17,428,169.34
5. Step 5: Solve for x
   x = 17,428,169.34/5,871.38
6. Step 6: Final answer
   x = 2,968.33