Finding the Fourth Proportional to 3,485.83, 5,226.86 and 1,145.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485.83 : 5,226.86 = 1,145.29 : x
2. Step 2: Convert to fraction form
   3,485.83/5,226.86 = 1,145.29/x
3. Step 3: Cross multiply
   3,485.83x = 5,226.86 × 1,145.29
4. Step 4: Simplify right side
   3,485.83x = 5,986,264.76
5. Step 5: Solve for x
   x = 5,986,264.76/3,485.83
6. Step 6: Final answer
   x = 1,717.31