Finding the Fourth Proportional to 2,485.30, 3,429.72 and 1,366.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.30 : 3,429.72 = 1,366.35 : x
2. Step 2: Convert to fraction form
   2,485.30/3,429.72 = 1,366.35/x
3. Step 3: Cross multiply
   2,485.30x = 3,429.72 × 1,366.35
4. Step 4: Simplify right side
   2,485.30x = 4,686,194.51
5. Step 5: Solve for x
   x = 4,686,194.51/2,485.30
6. Step 6: Final answer
   x = 1,885.57