Finding the Fourth Proportional to 2,261.92, 3,120.72 and 1,330.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.92 : 3,120.72 = 1,330.24 : x
2. Step 2: Convert to fraction form
   2,261.92/3,120.72 = 1,330.24/x
3. Step 3: Cross multiply
   2,261.92x = 3,120.72 × 1,330.24
4. Step 4: Simplify right side
   2,261.92x = 4,151,306.57
5. Step 5: Solve for x
   x = 4,151,306.57/2,261.92
6. Step 6: Final answer
   x = 1,835.30