Finding the Fourth Proportional to 2,876.72, 4,315.34 and 928.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,876.72 : 4,315.34 = 928.96 : x
2. Step 2: Convert to fraction form
   2,876.72/4,315.34 = 928.96/x
3. Step 3: Cross multiply
   2,876.72x = 4,315.34 × 928.96
4. Step 4: Simplify right side
   2,876.72x = 4,008,778.25
5. Step 5: Solve for x
   x = 4,008,778.25/2,876.72
6. Step 6: Final answer
   x = 1,393.52