Finding the Fourth Proportional to 3,859.54, 5,784.67 and 1,776.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.54 : 5,784.67 = 1,776.69 : x
2. Step 2: Convert to fraction form
   3,859.54/5,784.67 = 1,776.69/x
3. Step 3: Cross multiply
   3,859.54x = 5,784.67 × 1,776.69
4. Step 4: Simplify right side
   3,859.54x = 10,277,565.34
5. Step 5: Solve for x
   x = 10,277,565.34/3,859.54
6. Step 6: Final answer
   x = 2,662.90