Finding the Fourth Proportional to 693.42, 1,034.78 and 620.52

Step by Step Solution

1. Step 1: Write the proportion equation
   693.42 : 1,034.78 = 620.52 : x
2. Step 2: Convert to fraction form
   693.42/1,034.78 = 620.52/x
3. Step 3: Cross multiply
   693.42x = 1,034.78 × 620.52
4. Step 4: Simplify right side
   693.42x = 642,101.69
5. Step 5: Solve for x
   x = 642,101.69/693.42
6. Step 6: Final answer
   x = 925.99