Finding the Fourth Proportional to 948.50, 1,308.82 and 528.82

Step by Step Solution

1. Step 1: Write the proportion equation
   948.50 : 1,308.82 = 528.82 : x
2. Step 2: Convert to fraction form
   948.50/1,308.82 = 528.82/x
3. Step 3: Cross multiply
   948.50x = 1,308.82 × 528.82
4. Step 4: Simplify right side
   948.50x = 692,121.00
5. Step 5: Solve for x
   x = 692,121.00/948.50
6. Step 6: Final answer
   x = 729.70