Finding the Fourth Proportional to 2,137.31, 3,203.52 and 980.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.31 : 3,203.52 = 980.63 : x
2. Step 2: Convert to fraction form
   2,137.31/3,203.52 = 980.63/x
3. Step 3: Cross multiply
   2,137.31x = 3,203.52 × 980.63
4. Step 4: Simplify right side
   2,137.31x = 3,141,451.80
5. Step 5: Solve for x
   x = 3,141,451.80/2,137.31
6. Step 6: Final answer
   x = 1,469.82