Finding the Fourth Proportional to 2,145.32, 2,960.58 and 1,445.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.32 : 2,960.58 = 1,445.48 : x
2. Step 2: Convert to fraction form
   2,145.32/2,960.58 = 1,445.48/x
3. Step 3: Cross multiply
   2,145.32x = 2,960.58 × 1,445.48
4. Step 4: Simplify right side
   2,145.32x = 4,279,459.18
5. Step 5: Solve for x
   x = 4,279,459.18/2,145.32
6. Step 6: Final answer
   x = 1,994.79