Finding the Fourth Proportional to 3,851.58, 5,776.01 and 1,385.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.58 : 5,776.01 = 1,385.74 : x
2. Step 2: Convert to fraction form
   3,851.58/5,776.01 = 1,385.74/x
3. Step 3: Cross multiply
   3,851.58x = 5,776.01 × 1,385.74
4. Step 4: Simplify right side
   3,851.58x = 8,004,053.59
5. Step 5: Solve for x
   x = 8,004,053.59/3,851.58
6. Step 6: Final answer
   x = 2,078.12