Finding the Fourth Proportional to 1,147.25, 1,721.48 and 875.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.25 : 1,721.48 = 875.09 : x
2. Step 2: Convert to fraction form
   1,147.25/1,721.48 = 875.09/x
3. Step 3: Cross multiply
   1,147.25x = 1,721.48 × 875.09
4. Step 4: Simplify right side
   1,147.25x = 1,506,436.95
5. Step 5: Solve for x
   x = 1,506,436.95/1,147.25
6. Step 6: Final answer
   x = 1,313.09