Finding the Fourth Proportional to 2,205.05, 3,042.72 and 1,261.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.05 : 3,042.72 = 1,261.08 : x
2. Step 2: Convert to fraction form
   2,205.05/3,042.72 = 1,261.08/x
3. Step 3: Cross multiply
   2,205.05x = 3,042.72 × 1,261.08
4. Step 4: Simplify right side
   2,205.05x = 3,837,113.34
5. Step 5: Solve for x
   x = 3,837,113.34/2,205.05
6. Step 6: Final answer
   x = 1,740.15