Finding the Fourth Proportional to 2,431.34, 3,354.72 and 1,435.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.34 : 3,354.72 = 1,435.94 : x
2. Step 2: Convert to fraction form
   2,431.34/3,354.72 = 1,435.94/x
3. Step 3: Cross multiply
   2,431.34x = 3,354.72 × 1,435.94
4. Step 4: Simplify right side
   2,431.34x = 4,817,176.64
5. Step 5: Solve for x
   x = 4,817,176.64/2,431.34
6. Step 6: Final answer
   x = 1,981.28