Finding the Fourth Proportional to 1,433.71, 2,146.51 and 912.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.71 : 2,146.51 = 912.42 : x
2. Step 2: Convert to fraction form
   1,433.71/2,146.51 = 912.42/x
3. Step 3: Cross multiply
   1,433.71x = 2,146.51 × 912.42
4. Step 4: Simplify right side
   1,433.71x = 1,958,518.65
5. Step 5: Solve for x
   x = 1,958,518.65/1,433.71
6. Step 6: Final answer
   x = 1,366.05