Finding the Fourth Proportional to 2,380.43, 3,571.18 and 1,284.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.43 : 3,571.18 = 1,284.77 : x
2. Step 2: Convert to fraction form
   2,380.43/3,571.18 = 1,284.77/x
3. Step 3: Cross multiply
   2,380.43x = 3,571.18 × 1,284.77
4. Step 4: Simplify right side
   2,380.43x = 4,588,144.93
5. Step 5: Solve for x
   x = 4,588,144.93/2,380.43
6. Step 6: Final answer
   x = 1,927.44