Finding the Fourth Proportional to 1,003.73, 1,506.18 and 541.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.73 : 1,506.18 = 541.51 : x
2. Step 2: Convert to fraction form
   1,003.73/1,506.18 = 541.51/x
3. Step 3: Cross multiply
   1,003.73x = 1,506.18 × 541.51
4. Step 4: Simplify right side
   1,003.73x = 815,608.82
5. Step 5: Solve for x
   x = 815,608.82/1,003.73
6. Step 6: Final answer
   x = 812.58