Finding the Fourth Proportional to 1,543.31, 2,129.81 and 844.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.31 : 2,129.81 = 844.69 : x
2. Step 2: Convert to fraction form
   1,543.31/2,129.81 = 844.69/x
3. Step 3: Cross multiply
   1,543.31x = 2,129.81 × 844.69
4. Step 4: Simplify right side
   1,543.31x = 1,799,019.66
5. Step 5: Solve for x
   x = 1,799,019.66/1,543.31
6. Step 6: Final answer
   x = 1,165.69