Finding the Fourth Proportional to 2,646.18, 3,968.70 and 1,002.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.18 : 3,968.70 = 1,002.15 : x
2. Step 2: Convert to fraction form
   2,646.18/3,968.70 = 1,002.15/x
3. Step 3: Cross multiply
   2,646.18x = 3,968.70 × 1,002.15
4. Step 4: Simplify right side
   2,646.18x = 3,977,232.71
5. Step 5: Solve for x
   x = 3,977,232.71/2,646.18
6. Step 6: Final answer
   x = 1,503.01