Finding the Fourth Proportional to 906.27, 1,250.69 and 591.72

Step by Step Solution

1. Step 1: Write the proportion equation
   906.27 : 1,250.69 = 591.72 : x
2. Step 2: Convert to fraction form
   906.27/1,250.69 = 591.72/x
3. Step 3: Cross multiply
   906.27x = 1,250.69 × 591.72
4. Step 4: Simplify right side
   906.27x = 740,055.33
5. Step 5: Solve for x
   x = 740,055.33/906.27
6. Step 6: Final answer
   x = 816.59