Finding the Fourth Proportional to 1,806.74, 2,707.89 and 1,440.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.74 : 2,707.89 = 1,440.02 : x
2. Step 2: Convert to fraction form
   1,806.74/2,707.89 = 1,440.02/x
3. Step 3: Cross multiply
   1,806.74x = 2,707.89 × 1,440.02
4. Step 4: Simplify right side
   1,806.74x = 3,899,415.76
5. Step 5: Solve for x
   x = 3,899,415.76/1,806.74
6. Step 6: Final answer
   x = 2,158.26