Finding the Fourth Proportional to 1,043.57, 1,440.05 and 601.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,043.57 : 1,440.05 = 601.31 : x
2. Step 2: Convert to fraction form
   1,043.57/1,440.05 = 601.31/x
3. Step 3: Cross multiply
   1,043.57x = 1,440.05 × 601.31
4. Step 4: Simplify right side
   1,043.57x = 865,917.06
5. Step 5: Solve for x
   x = 865,917.06/1,043.57
6. Step 6: Final answer
   x = 829.76