Finding the Fourth Proportional to 1,910.38, 2,634.42 and 1,439.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.38 : 2,634.42 = 1,439.38 : x
2. Step 2: Convert to fraction form
   1,910.38/2,634.42 = 1,439.38/x
3. Step 3: Cross multiply
   1,910.38x = 2,634.42 × 1,439.38
4. Step 4: Simplify right side
   1,910.38x = 3,791,931.46
5. Step 5: Solve for x
   x = 3,791,931.46/1,910.38
6. Step 6: Final answer
   x = 1,984.91