Finding the Fourth Proportional to 2,292.72, 3,439.38 and 976.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,292.72 : 3,439.38 = 976.20 : x
2. Step 2: Convert to fraction form
   2,292.72/3,439.38 = 976.20/x
3. Step 3: Cross multiply
   2,292.72x = 3,439.38 × 976.20
4. Step 4: Simplify right side
   2,292.72x = 3,357,522.76
5. Step 5: Solve for x
   x = 3,357,522.76/2,292.72
6. Step 6: Final answer
   x = 1,464.43