Finding the Fourth Proportional to 3,780.82, 5,670.78 and 1,439.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.82 : 5,670.78 = 1,439.82 : x
2. Step 2: Convert to fraction form
   3,780.82/5,670.78 = 1,439.82/x
3. Step 3: Cross multiply
   3,780.82x = 5,670.78 × 1,439.82
4. Step 4: Simplify right side
   3,780.82x = 8,164,902.46
5. Step 5: Solve for x
   x = 8,164,902.46/3,780.82
6. Step 6: Final answer
   x = 2,159.56