Finding the Fourth Proportional to 2,915.39, 4,024.73 and 1,976.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,915.39 : 4,024.73 = 1,976.15 : x
2. Step 2: Convert to fraction form
   2,915.39/4,024.73 = 1,976.15/x
3. Step 3: Cross multiply
   2,915.39x = 4,024.73 × 1,976.15
4. Step 4: Simplify right side
   2,915.39x = 7,953,470.19
5. Step 5: Solve for x
   x = 7,953,470.19/2,915.39
6. Step 6: Final answer
   x = 2,728.10