Finding the Fourth Proportional to 2,240.16, 3,091.59 and 1,245.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.16 : 3,091.59 = 1,245.69 : x
2. Step 2: Convert to fraction form
   2,240.16/3,091.59 = 1,245.69/x
3. Step 3: Cross multiply
   2,240.16x = 3,091.59 × 1,245.69
4. Step 4: Simplify right side
   2,240.16x = 3,851,162.75
5. Step 5: Solve for x
   x = 3,851,162.75/2,240.16
6. Step 6: Final answer
   x = 1,719.15