Finding the Fourth Proportional to 1,009.56, 1,392.73 and 655.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.56 : 1,392.73 = 655.46 : x
2. Step 2: Convert to fraction form
   1,009.56/1,392.73 = 655.46/x
3. Step 3: Cross multiply
   1,009.56x = 1,392.73 × 655.46
4. Step 4: Simplify right side
   1,009.56x = 912,875.43
5. Step 5: Solve for x
   x = 912,875.43/1,009.56
6. Step 6: Final answer
   x = 904.23