Finding the Fourth Proportional to 2,431.23, 3,354.72 and 1,436.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.23 : 3,354.72 = 1,436.15 : x
2. Step 2: Convert to fraction form
   2,431.23/3,354.72 = 1,436.15/x
3. Step 3: Cross multiply
   2,431.23x = 3,354.72 × 1,436.15
4. Step 4: Simplify right side
   2,431.23x = 4,817,864.35
5. Step 5: Solve for x
   x = 4,817,864.35/2,431.23
6. Step 6: Final answer
   x = 1,981.66