Finding the Fourth Proportional to 2,071.34, 3,106.97 and 1,205

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.34 : 3,106.97 = 1,205 : x
2. Step 2: Convert to fraction form
   2,071.34/3,106.97 = 1,205/x
3. Step 3: Cross multiply
   2,071.34x = 3,106.97 × 1,205
4. Step 4: Simplify right side
   2,071.34x = 3,743,892.83
5. Step 5: Solve for x
   x = 3,743,892.83/2,071.34
6. Step 6: Final answer
   x = 1,807.47