Finding the Fourth Proportional to 3,109.89, 4,666.21 and 1,648.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.89 : 4,666.21 = 1,648.69 : x
2. Step 2: Convert to fraction form
   3,109.89/4,666.21 = 1,648.69/x
3. Step 3: Cross multiply
   3,109.89x = 4,666.21 × 1,648.69
4. Step 4: Simplify right side
   3,109.89x = 7,693,117.98
5. Step 5: Solve for x
   x = 7,693,117.98/3,109.89
6. Step 6: Final answer
   x = 2,473.76