Finding the Fourth Proportional to 1,900.72, 2,845.14 and 1,440.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.72 : 2,845.14 = 1,440.22 : x
2. Step 2: Convert to fraction form
   1,900.72/2,845.14 = 1,440.22/x
3. Step 3: Cross multiply
   1,900.72x = 2,845.14 × 1,440.22
4. Step 4: Simplify right side
   1,900.72x = 4,097,627.53
5. Step 5: Solve for x
   x = 4,097,627.53/1,900.72
6. Step 6: Final answer
   x = 2,155.83