Finding the Fourth Proportional to 1,542.47, 2,128.52 and 843.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,542.47 : 2,128.52 = 843.71 : x
2. Step 2: Convert to fraction form
   1,542.47/2,128.52 = 843.71/x
3. Step 3: Cross multiply
   1,542.47x = 2,128.52 × 843.71
4. Step 4: Simplify right side
   1,542.47x = 1,795,845.08
5. Step 5: Solve for x
   x = 1,795,845.08/1,542.47
6. Step 6: Final answer
   x = 1,164.27