Finding the Fourth Proportional to 1,921.50, 2,868.21 and 1,649.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.50 : 2,868.21 = 1,649.34 : x
2. Step 2: Convert to fraction form
   1,921.50/2,868.21 = 1,649.34/x
3. Step 3: Cross multiply
   1,921.50x = 2,868.21 × 1,649.34
4. Step 4: Simplify right side
   1,921.50x = 4,730,653.48
5. Step 5: Solve for x
   x = 4,730,653.48/1,921.50
6. Step 6: Final answer
   x = 2,461.96