Finding the Fourth Proportional to 1,348.94, 1,861.95 and 789.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.94 : 1,861.95 = 789.54 : x
2. Step 2: Convert to fraction form
   1,348.94/1,861.95 = 789.54/x
3. Step 3: Cross multiply
   1,348.94x = 1,861.95 × 789.54
4. Step 4: Simplify right side
   1,348.94x = 1,470,084.00
5. Step 5: Solve for x
   x = 1,470,084.00/1,348.94
6. Step 6: Final answer
   x = 1,089.81