Finding the Fourth Proportional to 1,112.42, 1,533.51 and 875.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.42 : 1,533.51 = 875.61 : x
2. Step 2: Convert to fraction form
   1,112.42/1,533.51 = 875.61/x
3. Step 3: Cross multiply
   1,112.42x = 1,533.51 × 875.61
4. Step 4: Simplify right side
   1,112.42x = 1,342,755.27
5. Step 5: Solve for x
   x = 1,342,755.27/1,112.42
6. Step 6: Final answer
   x = 1,207.05