Finding the Fourth Proportional to 3,336.69, 5,005.50 and 1,145.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,336.69 : 5,005.50 = 1,145.13 : x
2. Step 2: Convert to fraction form
   3,336.69/5,005.50 = 1,145.13/x
3. Step 3: Cross multiply
   3,336.69x = 5,005.50 × 1,145.13
4. Step 4: Simplify right side
   3,336.69x = 5,731,967.38
5. Step 5: Solve for x
   x = 5,731,967.38/3,336.69
6. Step 6: Final answer
   x = 1,717.86