Finding the Fourth Proportional to 1,076.31, 1,484.86 and 656.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.31 : 1,484.86 = 656.51 : x
2. Step 2: Convert to fraction form
   1,076.31/1,484.86 = 656.51/x
3. Step 3: Cross multiply
   1,076.31x = 1,484.86 × 656.51
4. Step 4: Simplify right side
   1,076.31x = 974,815.76
5. Step 5: Solve for x
   x = 974,815.76/1,076.31
6. Step 6: Final answer
   x = 905.70