Finding the Fourth Proportional to 2,647.42, 3,971.67 and 1,003.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.42 : 3,971.67 = 1,003.93 : x
2. Step 2: Convert to fraction form
   2,647.42/3,971.67 = 1,003.93/x
3. Step 3: Cross multiply
   2,647.42x = 3,971.67 × 1,003.93
4. Step 4: Simplify right side
   2,647.42x = 3,987,278.66
5. Step 5: Solve for x
   x = 3,987,278.66/2,647.42
6. Step 6: Final answer
   x = 1,506.10