Finding the Fourth Proportional to 4,789.42, 7,179.86 and 1,867.05

Step by Step Solution

1. Step 1: Write the proportion equation
   4,789.42 : 7,179.86 = 1,867.05 : x
2. Step 2: Convert to fraction form
   4,789.42/7,179.86 = 1,867.05/x
3. Step 3: Cross multiply
   4,789.42x = 7,179.86 × 1,867.05
4. Step 4: Simplify right side
   4,789.42x = 13,405,162.28
5. Step 5: Solve for x
   x = 13,405,162.28/4,789.42
6. Step 6: Final answer
   x = 2,798.91