Finding the Fourth Proportional to 2,091.30, 3,118.04 and 1,983.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.30 : 3,118.04 = 1,983.30 : x
2. Step 2: Convert to fraction form
   2,091.30/3,118.04 = 1,983.30/x
3. Step 3: Cross multiply
   2,091.30x = 3,118.04 × 1,983.30
4. Step 4: Simplify right side
   2,091.30x = 6,184,008.73
5. Step 5: Solve for x
   x = 6,184,008.73/2,091.30
6. Step 6: Final answer
   x = 2,957.02