Finding the Fourth Proportional to 1,411.19, 2,117.33 and 680.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.19 : 2,117.33 = 680.71 : x
2. Step 2: Convert to fraction form
   1,411.19/2,117.33 = 680.71/x
3. Step 3: Cross multiply
   1,411.19x = 2,117.33 × 680.71
4. Step 4: Simplify right side
   1,411.19x = 1,441,273.71
5. Step 5: Solve for x
   x = 1,441,273.71/1,411.19
6. Step 6: Final answer
   x = 1,021.32