Finding the Fourth Proportional to 957.56, 1,426.53 and 922.72

Step by Step Solution

1. Step 1: Write the proportion equation
   957.56 : 1,426.53 = 922.72 : x
2. Step 2: Convert to fraction form
   957.56/1,426.53 = 922.72/x
3. Step 3: Cross multiply
   957.56x = 1,426.53 × 922.72
4. Step 4: Simplify right side
   957.56x = 1,316,287.76
5. Step 5: Solve for x
   x = 1,316,287.76/957.56
6. Step 6: Final answer
   x = 1,374.63