Finding the Fourth Proportional to 3,870.96, 5,806.53 and 949.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.96 : 5,806.53 = 949.29 : x
2. Step 2: Convert to fraction form
   3,870.96/5,806.53 = 949.29/x
3. Step 3: Cross multiply
   3,870.96x = 5,806.53 × 949.29
4. Step 4: Simplify right side
   3,870.96x = 5,512,080.86
5. Step 5: Solve for x
   x = 5,512,080.86/3,870.96
6. Step 6: Final answer
   x = 1,423.96