Finding the Fourth Proportional to 1,445.58, 1,995.21 and 1,113.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.58 : 1,995.21 = 1,113.48 : x
2. Step 2: Convert to fraction form
   1,445.58/1,995.21 = 1,113.48/x
3. Step 3: Cross multiply
   1,445.58x = 1,995.21 × 1,113.48
4. Step 4: Simplify right side
   1,445.58x = 2,221,626.43
5. Step 5: Solve for x
   x = 2,221,626.43/1,445.58
6. Step 6: Final answer
   x = 1,536.84