Finding the Fourth Proportional to 2,240.37, 3,091.57 and 1,245.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.37 : 3,091.57 = 1,245.61 : x
2. Step 2: Convert to fraction form
   2,240.37/3,091.57 = 1,245.61/x
3. Step 3: Cross multiply
   2,240.37x = 3,091.57 × 1,245.61
4. Step 4: Simplify right side
   2,240.37x = 3,850,890.51
5. Step 5: Solve for x
   x = 3,850,890.51/2,240.37
6. Step 6: Final answer
   x = 1,718.86