Finding the Fourth Proportional to 1,435.72, 1,982.02 and 912.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.72 : 1,982.02 = 912.52 : x
2. Step 2: Convert to fraction form
   1,435.72/1,982.02 = 912.52/x
3. Step 3: Cross multiply
   1,435.72x = 1,982.02 × 912.52
4. Step 4: Simplify right side
   1,435.72x = 1,808,632.89
5. Step 5: Solve for x
   x = 1,808,632.89/1,435.72
6. Step 6: Final answer
   x = 1,259.74