Finding the Fourth Proportional to 2,240.25, 3,091.55 and 1,245.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.25 : 3,091.55 = 1,245.69 : x
2. Step 2: Convert to fraction form
   2,240.25/3,091.55 = 1,245.69/x
3. Step 3: Cross multiply
   2,240.25x = 3,091.55 × 1,245.69
4. Step 4: Simplify right side
   2,240.25x = 3,851,106.69
5. Step 5: Solve for x
   x = 3,851,106.69/2,240.25
6. Step 6: Final answer
   x = 1,719.05