Finding the Fourth Proportional to 2,285.72, 3,428.63 and 1,116.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.72 : 3,428.63 = 1,116.69 : x
2. Step 2: Convert to fraction form
   2,285.72/3,428.63 = 1,116.69/x
3. Step 3: Cross multiply
   2,285.72x = 3,428.63 × 1,116.69
4. Step 4: Simplify right side
   2,285.72x = 3,828,702.58
5. Step 5: Solve for x
   x = 3,828,702.58/2,285.72
6. Step 6: Final answer
   x = 1,675.05