Finding the Fourth Proportional to 1,612.72, 2,226.06 and 914.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.72 : 2,226.06 = 914.56 : x
2. Step 2: Convert to fraction form
   1,612.72/2,226.06 = 914.56/x
3. Step 3: Cross multiply
   1,612.72x = 2,226.06 × 914.56
4. Step 4: Simplify right side
   1,612.72x = 2,035,865.43
5. Step 5: Solve for x
   x = 2,035,865.43/1,612.72
6. Step 6: Final answer
   x = 1,262.38