Finding the Fourth Proportional to 2,784.78, 4,171.50 and 1,959.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.78 : 4,171.50 = 1,959.39 : x
2. Step 2: Convert to fraction form
   2,784.78/4,171.50 = 1,959.39/x
3. Step 3: Cross multiply
   2,784.78x = 4,171.50 × 1,959.39
4. Step 4: Simplify right side
   2,784.78x = 8,173,595.39
5. Step 5: Solve for x
   x = 8,173,595.39/2,784.78
6. Step 6: Final answer
   x = 2,935.10