Finding the Fourth Proportional to 3,978.32, 5,967.37 and 1,899.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.32 : 5,967.37 = 1,899.79 : x
2. Step 2: Convert to fraction form
   3,978.32/5,967.37 = 1,899.79/x
3. Step 3: Cross multiply
   3,978.32x = 5,967.37 × 1,899.79
4. Step 4: Simplify right side
   3,978.32x = 11,336,737.31
5. Step 5: Solve for x
   x = 11,336,737.31/3,978.32
6. Step 6: Final answer
   x = 2,849.63