Finding the Fourth Proportional to 1,445.20, 1,995.74 and 1,152.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.20 : 1,995.74 = 1,152.62 : x
2. Step 2: Convert to fraction form
   1,445.20/1,995.74 = 1,152.62/x
3. Step 3: Cross multiply
   1,445.20x = 1,995.74 × 1,152.62
4. Step 4: Simplify right side
   1,445.20x = 2,300,329.84
5. Step 5: Solve for x
   x = 2,300,329.84/1,445.20
6. Step 6: Final answer
   x = 1,591.70