Finding the Fourth Proportional to 2,647.35, 3,970.98 and 1,003.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.35 : 3,970.98 = 1,003.86 : x
2. Step 2: Convert to fraction form
   2,647.35/3,970.98 = 1,003.86/x
3. Step 3: Cross multiply
   2,647.35x = 3,970.98 × 1,003.86
4. Step 4: Simplify right side
   2,647.35x = 3,986,307.98
5. Step 5: Solve for x
   x = 3,986,307.98/2,647.35
6. Step 6: Final answer
   x = 1,505.77