Finding the Fourth Proportional to 1,570.59, 2,354.16 and 789.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.59 : 2,354.16 = 789.34 : x
2. Step 2: Convert to fraction form
   1,570.59/2,354.16 = 789.34/x
3. Step 3: Cross multiply
   1,570.59x = 2,354.16 × 789.34
4. Step 4: Simplify right side
   1,570.59x = 1,858,232.65
5. Step 5: Solve for x
   x = 1,858,232.65/1,570.59
6. Step 6: Final answer
   x = 1,183.14