Finding the Fourth Proportional to 1,502.53, 2,072.73 and 978.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.53 : 2,072.73 = 978.46 : x
2. Step 2: Convert to fraction form
   1,502.53/2,072.73 = 978.46/x
3. Step 3: Cross multiply
   1,502.53x = 2,072.73 × 978.46
4. Step 4: Simplify right side
   1,502.53x = 2,028,083.40
5. Step 5: Solve for x
   x = 2,028,083.40/1,502.53
6. Step 6: Final answer
   x = 1,349.78