Finding the Fourth Proportional to 3,155.72, 4,353.18 and 1,976.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,155.72 : 4,353.18 = 1,976.56 : x
2. Step 2: Convert to fraction form
   3,155.72/4,353.18 = 1,976.56/x
3. Step 3: Cross multiply
   3,155.72x = 4,353.18 × 1,976.56
4. Step 4: Simplify right side
   3,155.72x = 8,604,321.46
5. Step 5: Solve for x
   x = 8,604,321.46/3,155.72
6. Step 6: Final answer
   x = 2,726.58