Finding the Fourth Proportional to 1,990.52, 2,960.72 and 1,983.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.52 : 2,960.72 = 1,983.86 : x
2. Step 2: Convert to fraction form
   1,990.52/2,960.72 = 1,983.86/x
3. Step 3: Cross multiply
   1,990.52x = 2,960.72 × 1,983.86
4. Step 4: Simplify right side
   1,990.52x = 5,873,653.98
5. Step 5: Solve for x
   x = 5,873,653.98/1,990.52
6. Step 6: Final answer
   x = 2,950.81