Finding the Fourth Proportional to 1,340.25, 1,849.21 and 1,091.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.25 : 1,849.21 = 1,091.15 : x
2. Step 2: Convert to fraction form
   1,340.25/1,849.21 = 1,091.15/x
3. Step 3: Cross multiply
   1,340.25x = 1,849.21 × 1,091.15
4. Step 4: Simplify right side
   1,340.25x = 2,017,765.49
5. Step 5: Solve for x
   x = 2,017,765.49/1,340.25
6. Step 6: Final answer
   x = 1,505.51