Finding the Fourth Proportional to 2,199.94, 3,036.01 and 1,205.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.94 : 3,036.01 = 1,205.31 : x
2. Step 2: Convert to fraction form
   2,199.94/3,036.01 = 1,205.31/x
3. Step 3: Cross multiply
   2,199.94x = 3,036.01 × 1,205.31
4. Step 4: Simplify right side
   2,199.94x = 3,659,333.21
5. Step 5: Solve for x
   x = 3,659,333.21/2,199.94
6. Step 6: Final answer
   x = 1,663.38