Finding the Fourth Proportional to 1,435.89, 2,153.85 and 1,149.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.89 : 2,153.85 = 1,149.15 : x
2. Step 2: Convert to fraction form
   1,435.89/2,153.85 = 1,149.15/x
3. Step 3: Cross multiply
   1,435.89x = 2,153.85 × 1,149.15
4. Step 4: Simplify right side
   1,435.89x = 2,475,096.73
5. Step 5: Solve for x
   x = 2,475,096.73/1,435.89
6. Step 6: Final answer
   x = 1,723.74