Finding the Fourth Proportional to 1,308.69, 1,963.71 and 1,002.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.69 : 1,963.71 = 1,002.51 : x
2. Step 2: Convert to fraction form
   1,308.69/1,963.71 = 1,002.51/x
3. Step 3: Cross multiply
   1,308.69x = 1,963.71 × 1,002.51
4. Step 4: Simplify right side
   1,308.69x = 1,968,638.91
5. Step 5: Solve for x
   x = 1,968,638.91/1,308.69
6. Step 6: Final answer
   x = 1,504.28