Finding the Fourth Proportional to 1,551.89, 2,328.06 and 456.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.89 : 2,328.06 = 456.12 : x
2. Step 2: Convert to fraction form
   1,551.89/2,328.06 = 456.12/x
3. Step 3: Cross multiply
   1,551.89x = 2,328.06 × 456.12
4. Step 4: Simplify right side
   1,551.89x = 1,061,874.73
5. Step 5: Solve for x
   x = 1,061,874.73/1,551.89
6. Step 6: Final answer
   x = 684.25