Finding the Fourth Proportional to 1,051.83, 1,448.01 and 789.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.83 : 1,448.01 = 789.39 : x
2. Step 2: Convert to fraction form
   1,051.83/1,448.01 = 789.39/x
3. Step 3: Cross multiply
   1,051.83x = 1,448.01 × 789.39
4. Step 4: Simplify right side
   1,051.83x = 1,143,044.61
5. Step 5: Solve for x
   x = 1,143,044.61/1,051.83
6. Step 6: Final answer
   x = 1,086.72