Finding the Fourth Proportional to 2,240.10, 3,091.38 and 1,245.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.10 : 3,091.38 = 1,245.42 : x
2. Step 2: Convert to fraction form
   2,240.10/3,091.38 = 1,245.42/x
3. Step 3: Cross multiply
   2,240.10x = 3,091.38 × 1,245.42
4. Step 4: Simplify right side
   2,240.10x = 3,850,066.48
5. Step 5: Solve for x
   x = 3,850,066.48/2,240.10
6. Step 6: Final answer
   x = 1,718.70