Finding the Fourth Proportional to 1,060.18, 1,461.78 and 912.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.18 : 1,461.78 = 912.56 : x
2. Step 2: Convert to fraction form
   1,060.18/1,461.78 = 912.56/x
3. Step 3: Cross multiply
   1,060.18x = 1,461.78 × 912.56
4. Step 4: Simplify right side
   1,060.18x = 1,333,961.96
5. Step 5: Solve for x
   x = 1,333,961.96/1,060.18
6. Step 6: Final answer
   x = 1,258.24