Finding the Fourth Proportional to 1,112.41, 1,671.86 and 535.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.41 : 1,671.86 = 535.69 : x
2. Step 2: Convert to fraction form
   1,112.41/1,671.86 = 535.69/x
3. Step 3: Cross multiply
   1,112.41x = 1,671.86 × 535.69
4. Step 4: Simplify right side
   1,112.41x = 895,598.68
5. Step 5: Solve for x
   x = 895,598.68/1,112.41
6. Step 6: Final answer
   x = 805.10