Finding the Fourth Proportional to 3,978.43, 5,967.76 and 1,898.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.43 : 5,967.76 = 1,898.65 : x
2. Step 2: Convert to fraction form
   3,978.43/5,967.76 = 1,898.65/x
3. Step 3: Cross multiply
   3,978.43x = 5,967.76 × 1,898.65
4. Step 4: Simplify right side
   3,978.43x = 11,330,667.86
5. Step 5: Solve for x
   x = 11,330,667.86/3,978.43
6. Step 6: Final answer
   x = 2,848.03