Finding the Fourth Proportional to 2,818.86, 4,228.32 and 1,087.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.86 : 4,228.32 = 1,087.92 : x
2. Step 2: Convert to fraction form
   2,818.86/4,228.32 = 1,087.92/x
3. Step 3: Cross multiply
   2,818.86x = 4,228.32 × 1,087.92
4. Step 4: Simplify right side
   2,818.86x = 4,600,073.89
5. Step 5: Solve for x
   x = 4,600,073.89/2,818.86
6. Step 6: Final answer
   x = 1,631.89