Finding the Fourth Proportional to 820.05, 1,131.69 and 525.34

Step by Step Solution

1. Step 1: Write the proportion equation
   820.05 : 1,131.69 = 525.34 : x
2. Step 2: Convert to fraction form
   820.05/1,131.69 = 525.34/x
3. Step 3: Cross multiply
   820.05x = 1,131.69 × 525.34
4. Step 4: Simplify right side
   820.05x = 594,522.02
5. Step 5: Solve for x
   x = 594,522.02/820.05
6. Step 6: Final answer
   x = 724.98