Finding the Fourth Proportional to 2,528.32, 3,791.04 and 1,228.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.32 : 3,791.04 = 1,228.16 : x
2. Step 2: Convert to fraction form
   2,528.32/3,791.04 = 1,228.16/x
3. Step 3: Cross multiply
   2,528.32x = 3,791.04 × 1,228.16
4. Step 4: Simplify right side
   2,528.32x = 4,656,003.69
5. Step 5: Solve for x
   x = 4,656,003.69/2,528.32
6. Step 6: Final answer
   x = 1,841.54