Finding the Fourth Proportional to 1,308.79, 1,962.42 and 528.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.79 : 1,962.42 = 528.82 : x
2. Step 2: Convert to fraction form
   1,308.79/1,962.42 = 528.82/x
3. Step 3: Cross multiply
   1,308.79x = 1,962.42 × 528.82
4. Step 4: Simplify right side
   1,308.79x = 1,037,761.05
5. Step 5: Solve for x
   x = 1,037,761.05/1,308.79
6. Step 6: Final answer
   x = 792.92