Finding the Fourth Proportional to 2,003.31, 3,004.59 and 542.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.31 : 3,004.59 = 542.58 : x
2. Step 2: Convert to fraction form
   2,003.31/3,004.59 = 542.58/x
3. Step 3: Cross multiply
   2,003.31x = 3,004.59 × 542.58
4. Step 4: Simplify right side
   2,003.31x = 1,630,230.44
5. Step 5: Solve for x
   x = 1,630,230.44/2,003.31
6. Step 6: Final answer
   x = 813.77