Finding the Fourth Proportional to 1,076.18, 1,484.55 and 656.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.18 : 1,484.55 = 656.43 : x
2. Step 2: Convert to fraction form
   1,076.18/1,484.55 = 656.43/x
3. Step 3: Cross multiply
   1,076.18x = 1,484.55 × 656.43
4. Step 4: Simplify right side
   1,076.18x = 974,503.16
5. Step 5: Solve for x
   x = 974,503.16/1,076.18
6. Step 6: Final answer
   x = 905.52