Finding the Fourth Proportional to 2,020.62, 3,030.50 and 633.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.62 : 3,030.50 = 633.78 : x
2. Step 2: Convert to fraction form
   2,020.62/3,030.50 = 633.78/x
3. Step 3: Cross multiply
   2,020.62x = 3,030.50 × 633.78
4. Step 4: Simplify right side
   2,020.62x = 1,920,667.12
5. Step 5: Solve for x
   x = 1,920,667.12/2,020.62
6. Step 6: Final answer
   x = 950.53