Finding the Fourth Proportional to 5,758.38, 8,638.50 and 1,861.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,758.38 : 8,638.50 = 1,861.86 : x
2. Step 2: Convert to fraction form
   5,758.38/8,638.50 = 1,861.86/x
3. Step 3: Cross multiply
   5,758.38x = 8,638.50 × 1,861.86
4. Step 4: Simplify right side
   5,758.38x = 16,083,677.61
5. Step 5: Solve for x
   x = 16,083,677.61/5,758.38
6. Step 6: Final answer
   x = 2,793.09