Finding the Fourth Proportional to 1,410.49, 1,945.24 and 912.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.49 : 1,945.24 = 912.64 : x
2. Step 2: Convert to fraction form
   1,410.49/1,945.24 = 912.64/x
3. Step 3: Cross multiply
   1,410.49x = 1,945.24 × 912.64
4. Step 4: Simplify right side
   1,410.49x = 1,775,303.83
5. Step 5: Solve for x
   x = 1,775,303.83/1,410.49
6. Step 6: Final answer
   x = 1,258.64