Finding the Fourth Proportional to 2,162.13, 2,983.73 and 1,230.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.13 : 2,983.73 = 1,230.81 : x
2. Step 2: Convert to fraction form
   2,162.13/2,983.73 = 1,230.81/x
3. Step 3: Cross multiply
   2,162.13x = 2,983.73 × 1,230.81
4. Step 4: Simplify right side
   2,162.13x = 3,672,404.72
5. Step 5: Solve for x
   x = 3,672,404.72/2,162.13
6. Step 6: Final answer
   x = 1,698.51