Finding the Fourth Proportional to 2,851.54, 4,277.71 and 1,389.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.54 : 4,277.71 = 1,389.69 : x
2. Step 2: Convert to fraction form
   2,851.54/4,277.71 = 1,389.69/x
3. Step 3: Cross multiply
   2,851.54x = 4,277.71 × 1,389.69
4. Step 4: Simplify right side
   2,851.54x = 5,944,690.81
5. Step 5: Solve for x
   x = 5,944,690.81/2,851.54
6. Step 6: Final answer
   x = 2,084.73