Finding the Fourth Proportional to 2,235.42, 3,085.11 and 1,240.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235.42 : 3,085.11 = 1,240.83 : x
2. Step 2: Convert to fraction form
   2,235.42/3,085.11 = 1,240.83/x
3. Step 3: Cross multiply
   2,235.42x = 3,085.11 × 1,240.83
4. Step 4: Simplify right side
   2,235.42x = 3,828,097.04
5. Step 5: Solve for x
   x = 3,828,097.04/2,235.42
6. Step 6: Final answer
   x = 1,712.47