Finding the Fourth Proportional to 2,100.28, 3,149.58 and 945.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.28 : 3,149.58 = 945.28 : x
2. Step 2: Convert to fraction form
   2,100.28/3,149.58 = 945.28/x
3. Step 3: Cross multiply
   2,100.28x = 3,149.58 × 945.28
4. Step 4: Simplify right side
   2,100.28x = 2,977,234.98
5. Step 5: Solve for x
   x = 2,977,234.98/2,100.28
6. Step 6: Final answer
   x = 1,417.54