Finding the Fourth Proportional to 1,598.12, 2,205.72 and 899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.12 : 2,205.72 = 899.50 : x
2. Step 2: Convert to fraction form
   1,598.12/2,205.72 = 899.50/x
3. Step 3: Cross multiply
   1,598.12x = 2,205.72 × 899.50
4. Step 4: Simplify right side
   1,598.12x = 1,984,029.61
5. Step 5: Solve for x
   x = 1,984,029.61/1,598.12
6. Step 6: Final answer
   x = 1,241.48