Finding the Fourth Proportional to 3,063.48, 4,591.82 and 1,213.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,063.48 : 4,591.82 = 1,213.20 : x
2. Step 2: Convert to fraction form
   3,063.48/4,591.82 = 1,213.20/x
3. Step 3: Cross multiply
   3,063.48x = 4,591.82 × 1,213.20
4. Step 4: Simplify right side
   3,063.48x = 5,570,796.02
5. Step 5: Solve for x
   x = 5,570,796.02/3,063.48
6. Step 6: Final answer
   x = 1,818.45