Finding the Fourth Proportional to 2,407.74, 3,321.96 and 1,661.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,407.74 : 3,321.96 = 1,661.76 : x
2. Step 2: Convert to fraction form
   2,407.74/3,321.96 = 1,661.76/x
3. Step 3: Cross multiply
   2,407.74x = 3,321.96 × 1,661.76
4. Step 4: Simplify right side
   2,407.74x = 5,520,300.25
5. Step 5: Solve for x
   x = 5,520,300.25/2,407.74
6. Step 6: Final answer
   x = 2,292.73