Finding the Fourth Proportional to 3,869.10, 5,806.72 and 1,404.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.10 : 5,806.72 = 1,404.61 : x
2. Step 2: Convert to fraction form
   3,869.10/5,806.72 = 1,404.61/x
3. Step 3: Cross multiply
   3,869.10x = 5,806.72 × 1,404.61
4. Step 4: Simplify right side
   3,869.10x = 8,156,176.98
5. Step 5: Solve for x
   x = 8,156,176.98/3,869.10
6. Step 6: Final answer
   x = 2,108.03