Finding the Fourth Proportional to 1,983.52, 2,975.94 and 1,391.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.52 : 2,975.94 = 1,391.15 : x
2. Step 2: Convert to fraction form
   1,983.52/2,975.94 = 1,391.15/x
3. Step 3: Cross multiply
   1,983.52x = 2,975.94 × 1,391.15
4. Step 4: Simplify right side
   1,983.52x = 4,139,986.37
5. Step 5: Solve for x
   x = 4,139,986.37/1,983.52
6. Step 6: Final answer
   x = 2,087.19