Finding the Fourth Proportional to 2,199.81, 3,035.74 and 1,205.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.81 : 3,035.74 = 1,205.07 : x
2. Step 2: Convert to fraction form
   2,199.81/3,035.74 = 1,205.07/x
3. Step 3: Cross multiply
   2,199.81x = 3,035.74 × 1,205.07
4. Step 4: Simplify right side
   2,199.81x = 3,658,287.51
5. Step 5: Solve for x
   x = 3,658,287.51/2,199.81
6. Step 6: Final answer
   x = 1,663.00