Finding the Fourth Proportional to 3,782.98, 5,671.72 and 1,780.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,782.98 : 5,671.72 = 1,780.54 : x
2. Step 2: Convert to fraction form
   3,782.98/5,671.72 = 1,780.54/x
3. Step 3: Cross multiply
   3,782.98x = 5,671.72 × 1,780.54
4. Step 4: Simplify right side
   3,782.98x = 10,098,724.33
5. Step 5: Solve for x
   x = 10,098,724.33/3,782.98
6. Step 6: Final answer
   x = 2,669.52