Finding the Fourth Proportional to 1,052.15, 1,454.22 and 789.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.15 : 1,454.22 = 789.71 : x
2. Step 2: Convert to fraction form
   1,052.15/1,454.22 = 789.71/x
3. Step 3: Cross multiply
   1,052.15x = 1,454.22 × 789.71
4. Step 4: Simplify right side
   1,052.15x = 1,148,404.81
5. Step 5: Solve for x
   x = 1,148,404.81/1,052.15
6. Step 6: Final answer
   x = 1,091.49