Finding the Fourth Proportional to 3,736.89, 5,157.69 and 2,478.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,736.89 : 5,157.69 = 2,478.03 : x
2. Step 2: Convert to fraction form
   3,736.89/5,157.69 = 2,478.03/x
3. Step 3: Cross multiply
   3,736.89x = 5,157.69 × 2,478.03
4. Step 4: Simplify right side
   3,736.89x = 12,780,910.55
5. Step 5: Solve for x
   x = 12,780,910.55/3,736.89
6. Step 6: Final answer
   x = 3,420.20