Finding the Fourth Proportional to 1,558.54, 2,338.89 and 789.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.54 : 2,338.89 = 789.58 : x
2. Step 2: Convert to fraction form
   1,558.54/2,338.89 = 789.58/x
3. Step 3: Cross multiply
   1,558.54x = 2,338.89 × 789.58
4. Step 4: Simplify right side
   1,558.54x = 1,846,740.77
5. Step 5: Solve for x
   x = 1,846,740.77/1,558.54
6. Step 6: Final answer
   x = 1,184.92