Finding the Fourth Proportional to 3,846.72, 5,768.65 and 1,380.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,846.72 : 5,768.65 = 1,380.94 : x
2. Step 2: Convert to fraction form
   3,846.72/5,768.65 = 1,380.94/x
3. Step 3: Cross multiply
   3,846.72x = 5,768.65 × 1,380.94
4. Step 4: Simplify right side
   3,846.72x = 7,966,159.53
5. Step 5: Solve for x
   x = 7,966,159.53/3,846.72
6. Step 6: Final answer
   x = 2,070.90