Finding the Fourth Proportional to 3,859.42, 5,784.49 and 1,776.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.42 : 5,784.49 = 1,776.55 : x
2. Step 2: Convert to fraction form
   3,859.42/5,784.49 = 1,776.55/x
3. Step 3: Cross multiply
   3,859.42x = 5,784.49 × 1,776.55
4. Step 4: Simplify right side
   3,859.42x = 10,276,435.71
5. Step 5: Solve for x
   x = 10,276,435.71/3,859.42
6. Step 6: Final answer
   x = 2,662.69