Finding the Fourth Proportional to 2,103.50, 3,151.14 and 1,445.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.50 : 3,151.14 = 1,445.30 : x
2. Step 2: Convert to fraction form
   2,103.50/3,151.14 = 1,445.30/x
3. Step 3: Cross multiply
   2,103.50x = 3,151.14 × 1,445.30
4. Step 4: Simplify right side
   2,103.50x = 4,554,342.64
5. Step 5: Solve for x
   x = 4,554,342.64/2,103.50
6. Step 6: Final answer
   x = 2,165.13