Finding the Fourth Proportional to 2,162.08, 2,983.60 and 1,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.08 : 2,983.60 = 1,230.72 : x
2. Step 2: Convert to fraction form
   2,162.08/2,983.60 = 1,230.72/x
3. Step 3: Cross multiply
   2,162.08x = 2,983.60 × 1,230.72
4. Step 4: Simplify right side
   2,162.08x = 3,671,976.19
5. Step 5: Solve for x
   x = 3,671,976.19/2,162.08
6. Step 6: Final answer
   x = 1,698.35