Finding the Fourth Proportional to 3,111.28, 4,666.32 and 1,648.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.28 : 4,666.32 = 1,648.96 : x
2. Step 2: Convert to fraction form
   3,111.28/4,666.32 = 1,648.96/x
3. Step 3: Cross multiply
   3,111.28x = 4,666.32 × 1,648.96
4. Step 4: Simplify right side
   3,111.28x = 7,694,575.03
5. Step 5: Solve for x
   x = 7,694,575.03/3,111.28
6. Step 6: Final answer
   x = 2,473.12