Finding the Fourth Proportional to 2,340.72, 3,230.16 and 1,292.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.72 : 3,230.16 = 1,292.76 : x
2. Step 2: Convert to fraction form
   2,340.72/3,230.16 = 1,292.76/x
3. Step 3: Cross multiply
   2,340.72x = 3,230.16 × 1,292.76
4. Step 4: Simplify right side
   2,340.72x = 4,175,821.64
5. Step 5: Solve for x
   x = 4,175,821.64/2,340.72
6. Step 6: Final answer
   x = 1,783.99