Finding the Fourth Proportional to 3,426.87, 5,144.72 and 1,784.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426.87 : 5,144.72 = 1,784.55 : x
2. Step 2: Convert to fraction form
   3,426.87/5,144.72 = 1,784.55/x
3. Step 3: Cross multiply
   3,426.87x = 5,144.72 × 1,784.55
4. Step 4: Simplify right side
   3,426.87x = 9,181,001.15
5. Step 5: Solve for x
   x = 9,181,001.15/3,426.87
6. Step 6: Final answer
   x = 2,679.12