Finding the Fourth Proportional to 1,721.16, 2,373.82 and 1,131.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.16 : 2,373.82 = 1,131.48 : x
2. Step 2: Convert to fraction form
   1,721.16/2,373.82 = 1,131.48/x
3. Step 3: Cross multiply
   1,721.16x = 2,373.82 × 1,131.48
4. Step 4: Simplify right side
   1,721.16x = 2,685,929.85
5. Step 5: Solve for x
   x = 2,685,929.85/1,721.16
6. Step 6: Final answer
   x = 1,560.53