Finding the Fourth Proportional to 899.82, 1,358.15 and 899.82

Step by Step Solution

1. Step 1: Write the proportion equation
   899.82 : 1,358.15 = 899.82 : x
2. Step 2: Convert to fraction form
   899.82/1,358.15 = 899.82/x
3. Step 3: Cross multiply
   899.82x = 1,358.15 × 899.82
4. Step 4: Simplify right side
   899.82x = 1,222,086.03
5. Step 5: Solve for x
   x = 1,222,086.03/899.82
6. Step 6: Final answer
   x = 1,358.15