Finding the Fourth Proportional to 3,851.12, 5,776.05 and 1,385.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.12 : 5,776.05 = 1,385.48 : x
2. Step 2: Convert to fraction form
   3,851.12/5,776.05 = 1,385.48/x
3. Step 3: Cross multiply
   3,851.12x = 5,776.05 × 1,385.48
4. Step 4: Simplify right side
   3,851.12x = 8,002,594.83
5. Step 5: Solve for x
   x = 8,002,594.83/3,851.12
6. Step 6: Final answer
   x = 2,077.99