Finding the Fourth Proportional to 1,308.15, 1,961.49 and 528.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.15 : 1,961.49 = 528.53 : x
2. Step 2: Convert to fraction form
   1,308.15/1,961.49 = 528.53/x
3. Step 3: Cross multiply
   1,308.15x = 1,961.49 × 528.53
4. Step 4: Simplify right side
   1,308.15x = 1,036,696.50
5. Step 5: Solve for x
   x = 1,036,696.50/1,308.15
6. Step 6: Final answer
   x = 792.49