Finding the Fourth Proportional to 1,439.07, 1,983.33 and 1,045.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.07 : 1,983.33 = 1,045.41 : x
2. Step 2: Convert to fraction form
   1,439.07/1,983.33 = 1,045.41/x
3. Step 3: Cross multiply
   1,439.07x = 1,983.33 × 1,045.41
4. Step 4: Simplify right side
   1,439.07x = 2,073,393.02
5. Step 5: Solve for x
   x = 2,073,393.02/1,439.07
6. Step 6: Final answer
   x = 1,440.79