Finding the Fourth Proportional to 1,322.82, 1,984.59 and 542.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,322.82 : 1,984.59 = 542.43 : x
2. Step 2: Convert to fraction form
   1,322.82/1,984.59 = 542.43/x
3. Step 3: Cross multiply
   1,322.82x = 1,984.59 × 542.43
4. Step 4: Simplify right side
   1,322.82x = 1,076,501.15
5. Step 5: Solve for x
   x = 1,076,501.15/1,322.82
6. Step 6: Final answer
   x = 813.79