Finding the Fourth Proportional to 2,730.45, 4,090.82 and 1,267.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,730.45 : 4,090.82 = 1,267.05 : x
2. Step 2: Convert to fraction form
   2,730.45/4,090.82 = 1,267.05/x
3. Step 3: Cross multiply
   2,730.45x = 4,090.82 × 1,267.05
4. Step 4: Simplify right side
   2,730.45x = 5,183,267.15
5. Step 5: Solve for x
   x = 5,183,267.15/2,730.45
6. Step 6: Final answer
   x = 1,898.32