Finding the Fourth Proportional to 2,876.32, 4,314.57 and 928.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,876.32 : 4,314.57 = 928.72 : x
2. Step 2: Convert to fraction form
   2,876.32/4,314.57 = 928.72/x
3. Step 3: Cross multiply
   2,876.32x = 4,314.57 × 928.72
4. Step 4: Simplify right side
   2,876.32x = 4,007,027.45
5. Step 5: Solve for x
   x = 4,007,027.45/2,876.32
6. Step 6: Final answer
   x = 1,393.11