Finding the Fourth Proportional to 2,273.76, 3,407.20 and 1,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,273.76 : 3,407.20 = 1,658.72 : x
2. Step 2: Convert to fraction form
   2,273.76/3,407.20 = 1,658.72/x
3. Step 3: Cross multiply
   2,273.76x = 3,407.20 × 1,658.72
4. Step 4: Simplify right side
   2,273.76x = 5,651,590.78
5. Step 5: Solve for x
   x = 5,651,590.78/2,273.76
6. Step 6: Final answer
   x = 2,485.57