Finding the Fourth Proportional to 1,348.57, 2,021.71 and 722.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.57 : 2,021.71 = 722.47 : x
2. Step 2: Convert to fraction form
   1,348.57/2,021.71 = 722.47/x
3. Step 3: Cross multiply
   1,348.57x = 2,021.71 × 722.47
4. Step 4: Simplify right side
   1,348.57x = 1,460,624.82
5. Step 5: Solve for x
   x = 1,460,624.82/1,348.57
6. Step 6: Final answer
   x = 1,083.09