Finding the Fourth Proportional to 2,013.08, 3,019.42 and 917.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.08 : 3,019.42 = 917.15 : x
2. Step 2: Convert to fraction form
   2,013.08/3,019.42 = 917.15/x
3. Step 3: Cross multiply
   2,013.08x = 3,019.42 × 917.15
4. Step 4: Simplify right side
   2,013.08x = 2,769,256.47
5. Step 5: Solve for x
   x = 2,769,256.47/2,013.08
6. Step 6: Final answer
   x = 1,375.63