Finding the Fourth Proportional to 1,440.67, 2,159.76 and 1,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.67 : 2,159.76 = 1,222.72 : x
2. Step 2: Convert to fraction form
   1,440.67/2,159.76 = 1,222.72/x
3. Step 3: Cross multiply
   1,440.67x = 2,159.76 × 1,222.72
4. Step 4: Simplify right side
   1,440.67x = 2,640,781.75
5. Step 5: Solve for x
   x = 2,640,781.75/1,440.67
6. Step 6: Final answer
   x = 1,833.02