Finding the Fourth Proportional to 2,474.28, 3,710.61 and 830.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,474.28 : 3,710.61 = 830.52 : x
2. Step 2: Convert to fraction form
   2,474.28/3,710.61 = 830.52/x
3. Step 3: Cross multiply
   2,474.28x = 3,710.61 × 830.52
4. Step 4: Simplify right side
   2,474.28x = 3,081,735.82
5. Step 5: Solve for x
   x = 3,081,735.82/2,474.28
6. Step 6: Final answer
   x = 1,245.51