Finding the Fourth Proportional to 1,350.06, 1,862.37 and 978

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.06 : 1,862.37 = 978 : x
2. Step 2: Convert to fraction form
   1,350.06/1,862.37 = 978/x
3. Step 3: Cross multiply
   1,350.06x = 1,862.37 × 978
4. Step 4: Simplify right side
   1,350.06x = 1,821,397.86
5. Step 5: Solve for x
   x = 1,821,397.86/1,350.06
6. Step 6: Final answer
   x = 1,349.12