Finding the Fourth Proportional to 1,445.92, 1,994.34 and 922.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.92 : 1,994.34 = 922.72 : x
2. Step 2: Convert to fraction form
   1,445.92/1,994.34 = 922.72/x
3. Step 3: Cross multiply
   1,445.92x = 1,994.34 × 922.72
4. Step 4: Simplify right side
   1,445.92x = 1,840,217.40
5. Step 5: Solve for x
   x = 1,840,217.40/1,445.92
6. Step 6: Final answer
   x = 1,272.70