Finding the Fourth Proportional to 1,475.69, 2,209.61 and 1,155.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,475.69 : 2,209.61 = 1,155.89 : x
2. Step 2: Convert to fraction form
   1,475.69/2,209.61 = 1,155.89/x
3. Step 3: Cross multiply
   1,475.69x = 2,209.61 × 1,155.89
4. Step 4: Simplify right side
   1,475.69x = 2,554,049.28
5. Step 5: Solve for x
   x = 2,554,049.28/1,475.69
6. Step 6: Final answer
   x = 1,730.76