Finding the Fourth Proportional to 1,598.22, 2,205.42 and 899.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.22 : 2,205.42 = 899.58 : x
2. Step 2: Convert to fraction form
   1,598.22/2,205.42 = 899.58/x
3. Step 3: Cross multiply
   1,598.22x = 2,205.42 × 899.58
4. Step 4: Simplify right side
   1,598.22x = 1,983,951.72
5. Step 5: Solve for x
   x = 1,983,951.72/1,598.22
6. Step 6: Final answer
   x = 1,241.35