Finding the Fourth Proportional to 3,245.45, 4,866.56 and 1,053.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,245.45 : 4,866.56 = 1,053.89 : x
2. Step 2: Convert to fraction form
   3,245.45/4,866.56 = 1,053.89/x
3. Step 3: Cross multiply
   3,245.45x = 4,866.56 × 1,053.89
4. Step 4: Simplify right side
   3,245.45x = 5,128,844.82
5. Step 5: Solve for x
   x = 5,128,844.82/3,245.45
6. Step 6: Final answer
   x = 1,580.32