Finding the Fourth Proportional to 2,150.48, 3,225.27 and 980.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.48 : 3,225.27 = 980.15 : x
2. Step 2: Convert to fraction form
   2,150.48/3,225.27 = 980.15/x
3. Step 3: Cross multiply
   2,150.48x = 3,225.27 × 980.15
4. Step 4: Simplify right side
   2,150.48x = 3,161,232.26
5. Step 5: Solve for x
   x = 3,161,232.26/2,150.48
6. Step 6: Final answer
   x = 1,470.02