Finding the Fourth Proportional to 1,034.94, 1,559.52 and 856.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.94 : 1,559.52 = 856.33 : x
2. Step 2: Convert to fraction form
   1,034.94/1,559.52 = 856.33/x
3. Step 3: Cross multiply
   1,034.94x = 1,559.52 × 856.33
4. Step 4: Simplify right side
   1,034.94x = 1,335,463.76
5. Step 5: Solve for x
   x = 1,335,463.76/1,034.94
6. Step 6: Final answer
   x = 1,290.38