Finding the Fourth Proportional to 1,105.89, 1,655.88 and 875.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.89 : 1,655.88 = 875.25 : x
2. Step 2: Convert to fraction form
   1,105.89/1,655.88 = 875.25/x
3. Step 3: Cross multiply
   1,105.89x = 1,655.88 × 875.25
4. Step 4: Simplify right side
   1,105.89x = 1,449,308.97
5. Step 5: Solve for x
   x = 1,449,308.97/1,105.89
6. Step 6: Final answer
   x = 1,310.54