Finding the Fourth Proportional to 1,502.50, 2,073.63 and 978.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.50 : 2,073.63 = 978.97 : x
2. Step 2: Convert to fraction form
   1,502.50/2,073.63 = 978.97/x
3. Step 3: Cross multiply
   1,502.50x = 2,073.63 × 978.97
4. Step 4: Simplify right side
   1,502.50x = 2,030,021.56
5. Step 5: Solve for x
   x = 2,030,021.56/1,502.50
6. Step 6: Final answer
   x = 1,351.10