Finding the Fourth Proportional to 978.94, 1,350.89 and 536.83

Step by Step Solution

1. Step 1: Write the proportion equation
   978.94 : 1,350.89 = 536.83 : x
2. Step 2: Convert to fraction form
   978.94/1,350.89 = 536.83/x
3. Step 3: Cross multiply
   978.94x = 1,350.89 × 536.83
4. Step 4: Simplify right side
   978.94x = 725,197.25
5. Step 5: Solve for x
   x = 725,197.25/978.94
6. Step 6: Final answer
   x = 740.80