Finding the Fourth Proportional to 2,234.80, 3,083.91 and 1,240.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.80 : 3,083.91 = 1,240.05 : x
2. Step 2: Convert to fraction form
   2,234.80/3,083.91 = 1,240.05/x
3. Step 3: Cross multiply
   2,234.80x = 3,083.91 × 1,240.05
4. Step 4: Simplify right side
   2,234.80x = 3,824,200.84
5. Step 5: Solve for x
   x = 3,824,200.84/2,234.80
6. Step 6: Final answer
   x = 1,711.21