Finding the Fourth Proportional to 1,983.34, 2,976.62 and 1,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.34 : 2,976.62 = 1,399.50 : x
2. Step 2: Convert to fraction form
   1,983.34/2,976.62 = 1,399.50/x
3. Step 3: Cross multiply
   1,983.34x = 2,976.62 × 1,399.50
4. Step 4: Simplify right side
   1,983.34x = 4,165,779.69
5. Step 5: Solve for x
   x = 4,165,779.69/1,983.34
6. Step 6: Final answer
   x = 2,100.39