Finding the Fourth Proportional to 2,230.43, 3,077.96 and 1,235.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,230.43 : 3,077.96 = 1,235.72 : x
2. Step 2: Convert to fraction form
   2,230.43/3,077.96 = 1,235.72/x
3. Step 3: Cross multiply
   2,230.43x = 3,077.96 × 1,235.72
4. Step 4: Simplify right side
   2,230.43x = 3,803,498.25
5. Step 5: Solve for x
   x = 3,803,498.25/2,230.43
6. Step 6: Final answer
   x = 1,705.28