Finding the Fourth Proportional to 3,280.59, 4,921.58 and 1,200.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,280.59 : 4,921.58 = 1,200.58 : x
2. Step 2: Convert to fraction form
   3,280.59/4,921.58 = 1,200.58/x
3. Step 3: Cross multiply
   3,280.59x = 4,921.58 × 1,200.58
4. Step 4: Simplify right side
   3,280.59x = 5,908,765.82
5. Step 5: Solve for x
   x = 5,908,765.82/3,280.59
6. Step 6: Final answer
   x = 1,801.13