Finding the Fourth Proportional to 1,100.74, 1,514.88 and 1,012.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.74 : 1,514.88 = 1,012.24 : x
2. Step 2: Convert to fraction form
   1,100.74/1,514.88 = 1,012.24/x
3. Step 3: Cross multiply
   1,100.74x = 1,514.88 × 1,012.24
4. Step 4: Simplify right side
   1,100.74x = 1,533,425.92
5. Step 5: Solve for x
   x = 1,533,425.92/1,100.74
6. Step 6: Final answer
   x = 1,393.09