Finding the Fourth Proportional to 2,017.60, 3,009.15 and 1,772.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.60 : 3,009.15 = 1,772.42 : x
2. Step 2: Convert to fraction form
   2,017.60/3,009.15 = 1,772.42/x
3. Step 3: Cross multiply
   2,017.60x = 3,009.15 × 1,772.42
4. Step 4: Simplify right side
   2,017.60x = 5,333,468.78
5. Step 5: Solve for x
   x = 5,333,468.78/2,017.60
6. Step 6: Final answer
   x = 2,643.47