Finding the Fourth Proportional to 2,818.07, 4,229.58 and 1,087.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.07 : 4,229.58 = 1,087.91 : x
2. Step 2: Convert to fraction form
   2,818.07/4,229.58 = 1,087.91/x
3. Step 3: Cross multiply
   2,818.07x = 4,229.58 × 1,087.91
4. Step 4: Simplify right side
   2,818.07x = 4,601,402.38
5. Step 5: Solve for x
   x = 4,601,402.38/2,818.07
6. Step 6: Final answer
   x = 1,632.82