Finding the Fourth Proportional to 2,645.67, 3,968.55 and 1,002.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.67 : 3,968.55 = 1,002.99 : x
2. Step 2: Convert to fraction form
   2,645.67/3,968.55 = 1,002.99/x
3. Step 3: Cross multiply
   2,645.67x = 3,968.55 × 1,002.99
4. Step 4: Simplify right side
   2,645.67x = 3,980,415.96
5. Step 5: Solve for x
   x = 3,980,415.96/2,645.67
6. Step 6: Final answer
   x = 1,504.50