Finding the Fourth Proportional to 4,156.84, 5,736.72 and 2,389.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,156.84 : 5,736.72 = 2,389.15 : x
2. Step 2: Convert to fraction form
   4,156.84/5,736.72 = 2,389.15/x
3. Step 3: Cross multiply
   4,156.84x = 5,736.72 × 2,389.15
4. Step 4: Simplify right side
   4,156.84x = 13,705,884.59
5. Step 5: Solve for x
   x = 13,705,884.59/4,156.84
6. Step 6: Final answer
   x = 3,297.19