Finding the Fourth Proportional to 1,334.40, 1,997.55 and 1,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.40 : 1,997.55 = 1,099.50 : x
2. Step 2: Convert to fraction form
   1,334.40/1,997.55 = 1,099.50/x
3. Step 3: Cross multiply
   1,334.40x = 1,997.55 × 1,099.50
4. Step 4: Simplify right side
   1,334.40x = 2,196,306.23
5. Step 5: Solve for x
   x = 2,196,306.23/1,334.40
6. Step 6: Final answer
   x = 1,645.91