Finding the Fourth Proportional to 1,906.93, 2,630.57 and 1,440.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.93 : 2,630.57 = 1,440.37 : x
2. Step 2: Convert to fraction form
   1,906.93/2,630.57 = 1,440.37/x
3. Step 3: Cross multiply
   1,906.93x = 2,630.57 × 1,440.37
4. Step 4: Simplify right side
   1,906.93x = 3,788,986.91
5. Step 5: Solve for x
   x = 3,788,986.91/1,906.93
6. Step 6: Final answer
   x = 1,986.96