Finding the Fourth Proportional to 3,247.57, 4,870.83 and 1,055.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,247.57 : 4,870.83 = 1,055.80 : x
2. Step 2: Convert to fraction form
   3,247.57/4,870.83 = 1,055.80/x
3. Step 3: Cross multiply
   3,247.57x = 4,870.83 × 1,055.80
4. Step 4: Simplify right side
   3,247.57x = 5,142,622.31
5. Step 5: Solve for x
   x = 5,142,622.31/3,247.57
6. Step 6: Final answer
   x = 1,583.53