Finding the Fourth Proportional to 3,788.16, 5,222.52 and 2,830.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788.16 : 5,222.52 = 2,830.20 : x
2. Step 2: Convert to fraction form
   3,788.16/5,222.52 = 2,830.20/x
3. Step 3: Cross multiply
   3,788.16x = 5,222.52 × 2,830.20
4. Step 4: Simplify right side
   3,788.16x = 14,780,776.10
5. Step 5: Solve for x
   x = 14,780,776.10/3,788.16
6. Step 6: Final answer
   x = 3,901.84