Finding the Fourth Proportional to 1,542.12, 2,128.06 and 843.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,542.12 : 2,128.06 = 843.52 : x
2. Step 2: Convert to fraction form
   1,542.12/2,128.06 = 843.52/x
3. Step 3: Cross multiply
   1,542.12x = 2,128.06 × 843.52
4. Step 4: Simplify right side
   1,542.12x = 1,795,061.17
5. Step 5: Solve for x
   x = 1,795,061.17/1,542.12
6. Step 6: Final answer
   x = 1,164.02