Finding the Fourth Proportional to 1,087.72, 1,501.41 and 662.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.72 : 1,501.41 = 662.34 : x
2. Step 2: Convert to fraction form
   1,087.72/1,501.41 = 662.34/x
3. Step 3: Cross multiply
   1,087.72x = 1,501.41 × 662.34
4. Step 4: Simplify right side
   1,087.72x = 994,443.90
5. Step 5: Solve for x
   x = 994,443.90/1,087.72
6. Step 6: Final answer
   x = 914.25