Finding the Fourth Proportional to 3,934.59, 5,902.20 and 1,012.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,934.59 : 5,902.20 = 1,012.89 : x
2. Step 2: Convert to fraction form
   3,934.59/5,902.20 = 1,012.89/x
3. Step 3: Cross multiply
   3,934.59x = 5,902.20 × 1,012.89
4. Step 4: Simplify right side
   3,934.59x = 5,978,279.36
5. Step 5: Solve for x
   x = 5,978,279.36/3,934.59
6. Step 6: Final answer
   x = 1,519.42