Finding the Fourth Proportional to 1,152.98, 1,721.26 and 1,112.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.98 : 1,721.26 = 1,112.48 : x
2. Step 2: Convert to fraction form
   1,152.98/1,721.26 = 1,112.48/x
3. Step 3: Cross multiply
   1,152.98x = 1,721.26 × 1,112.48
4. Step 4: Simplify right side
   1,152.98x = 1,914,867.32
5. Step 5: Solve for x
   x = 1,914,867.32/1,152.98
6. Step 6: Final answer
   x = 1,660.80