Finding the Fourth Proportional to 942.52, 1,300.78 and 528.52

Step by Step Solution

1. Step 1: Write the proportion equation
   942.52 : 1,300.78 = 528.52 : x
2. Step 2: Convert to fraction form
   942.52/1,300.78 = 528.52/x
3. Step 3: Cross multiply
   942.52x = 1,300.78 × 528.52
4. Step 4: Simplify right side
   942.52x = 687,488.25
5. Step 5: Solve for x
   x = 687,488.25/942.52
6. Step 6: Final answer
   x = 729.42