Finding the Fourth Proportional to 1,061.89, 1,592.24 and 843.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.89 : 1,592.24 = 843.91 : x
2. Step 2: Convert to fraction form
   1,061.89/1,592.24 = 843.91/x
3. Step 3: Cross multiply
   1,061.89x = 1,592.24 × 843.91
4. Step 4: Simplify right side
   1,061.89x = 1,343,707.26
5. Step 5: Solve for x
   x = 1,343,707.26/1,061.89
6. Step 6: Final answer
   x = 1,265.39