Finding the Fourth Proportional to 1,147.50, 1,721.33 and 841.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.50 : 1,721.33 = 841.29 : x
2. Step 2: Convert to fraction form
   1,147.50/1,721.33 = 841.29/x
3. Step 3: Cross multiply
   1,147.50x = 1,721.33 × 841.29
4. Step 4: Simplify right side
   1,147.50x = 1,448,134.94
5. Step 5: Solve for x
   x = 1,448,134.94/1,147.50
6. Step 6: Final answer
   x = 1,261.99