Finding the Fourth Proportional to 1,433.76, 1,974.96 and 1,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.76 : 1,974.96 = 1,122.72 : x
2. Step 2: Convert to fraction form
   1,433.76/1,974.96 = 1,122.72/x
3. Step 3: Cross multiply
   1,433.76x = 1,974.96 × 1,122.72
4. Step 4: Simplify right side
   1,433.76x = 2,217,327.09
5. Step 5: Solve for x
   x = 2,217,327.09/1,433.76
6. Step 6: Final answer
   x = 1,546.51