Finding the Fourth Proportional to 1,598.57, 2,205.38 and 1,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.57 : 2,205.38 = 1,155.50 : x
2. Step 2: Convert to fraction form
   1,598.57/2,205.38 = 1,155.50/x
3. Step 3: Cross multiply
   1,598.57x = 2,205.38 × 1,155.50
4. Step 4: Simplify right side
   1,598.57x = 2,548,310.22
5. Step 5: Solve for x
   x = 2,548,310.22/1,598.57
6. Step 6: Final answer
   x = 1,594.12