Finding the Fourth Proportional to 1,612.29, 2,224.46 and 904.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.29 : 2,224.46 = 904.05 : x
2. Step 2: Convert to fraction form
   1,612.29/2,224.46 = 904.05/x
3. Step 3: Cross multiply
   1,612.29x = 2,224.46 × 904.05
4. Step 4: Simplify right side
   1,612.29x = 2,011,018.54
5. Step 5: Solve for x
   x = 2,011,018.54/1,612.29
6. Step 6: Final answer
   x = 1,247.31