Finding the Fourth Proportional to 3,061.53, 4,589.39 and 1,213.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.53 : 4,589.39 = 1,213.78 : x
2. Step 2: Convert to fraction form
   3,061.53/4,589.39 = 1,213.78/x
3. Step 3: Cross multiply
   3,061.53x = 4,589.39 × 1,213.78
4. Step 4: Simplify right side
   3,061.53x = 5,570,503.73
5. Step 5: Solve for x
   x = 5,570,503.73/3,061.53
6. Step 6: Final answer
   x = 1,819.52