Finding the Fourth Proportional to 1,043.93, 1,440.61 and 571.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.93 : 1,440.61 = 571.83 : x
2. Step 2: Convert to fraction form
   1,043.93/1,440.61 = 571.83/x
3. Step 3: Cross multiply
   1,043.93x = 1,440.61 × 571.83
4. Step 4: Simplify right side
   1,043.93x = 823,784.02
5. Step 5: Solve for x
   x = 823,784.02/1,043.93
6. Step 6: Final answer
   x = 789.12