Finding the Fourth Proportional to 1,475.16, 2,036.87 and 978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,475.16 : 2,036.87 = 978.50 : x
2. Step 2: Convert to fraction form
   1,475.16/2,036.87 = 978.50/x
3. Step 3: Cross multiply
   1,475.16x = 2,036.87 × 978.50
4. Step 4: Simplify right side
   1,475.16x = 1,993,062.22
5. Step 5: Solve for x
   x = 1,993,062.22/1,475.16
6. Step 6: Final answer
   x = 1,351.08