Finding the Fourth Proportional to 2,784.30, 4,178.48 and 1,323.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.30 : 4,178.48 = 1,323.46 : x
2. Step 2: Convert to fraction form
   2,784.30/4,178.48 = 1,323.46/x
3. Step 3: Cross multiply
   2,784.30x = 4,178.48 × 1,323.46
4. Step 4: Simplify right side
   2,784.30x = 5,530,051.14
5. Step 5: Solve for x
   x = 5,530,051.14/2,784.30
6. Step 6: Final answer
   x = 1,986.15