Finding the Fourth Proportional to 1,784.69, 2,675.71 and 859.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,784.69 : 2,675.71 = 859.37 : x
2. Step 2: Convert to fraction form
   1,784.69/2,675.71 = 859.37/x
3. Step 3: Cross multiply
   1,784.69x = 2,675.71 × 859.37
4. Step 4: Simplify right side
   1,784.69x = 2,299,424.90
5. Step 5: Solve for x
   x = 2,299,424.90/1,784.69
6. Step 6: Final answer
   x = 1,288.42