Finding the Fourth Proportional to 1,475.15, 2,036.33 and 978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,475.15 : 2,036.33 = 978.52 : x
2. Step 2: Convert to fraction form
   1,475.15/2,036.33 = 978.52/x
3. Step 3: Cross multiply
   1,475.15x = 2,036.33 × 978.52
4. Step 4: Simplify right side
   1,475.15x = 1,992,589.63
5. Step 5: Solve for x
   x = 1,992,589.63/1,475.15
6. Step 6: Final answer
   x = 1,350.77