Finding the Fourth Proportional to 3,978.59, 5,968.49 and 1,898.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.59 : 5,968.49 = 1,898.51 : x
2. Step 2: Convert to fraction form
   3,978.59/5,968.49 = 1,898.51/x
3. Step 3: Cross multiply
   3,978.59x = 5,968.49 × 1,898.51
4. Step 4: Simplify right side
   3,978.59x = 11,331,198.61
5. Step 5: Solve for x
   x = 11,331,198.61/3,978.59
6. Step 6: Final answer
   x = 2,848.05