Finding the Fourth Proportional to 1,112.43, 1,535.72 and 1,052.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.43 : 1,535.72 = 1,052.13 : x
2. Step 2: Convert to fraction form
   1,112.43/1,535.72 = 1,052.13/x
3. Step 3: Cross multiply
   1,112.43x = 1,535.72 × 1,052.13
4. Step 4: Simplify right side
   1,112.43x = 1,615,771.82
5. Step 5: Solve for x
   x = 1,615,771.82/1,112.43
6. Step 6: Final answer
   x = 1,452.47