Finding the Fourth Proportional to 2,054.17, 2,816.32 and 2,017.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.17 : 2,816.32 = 2,017.31 : x
2. Step 2: Convert to fraction form
   2,054.17/2,816.32 = 2,017.31/x
3. Step 3: Cross multiply
   2,054.17x = 2,816.32 × 2,017.31
4. Step 4: Simplify right side
   2,054.17x = 5,681,392.50
5. Step 5: Solve for x
   x = 5,681,392.50/2,054.17
6. Step 6: Final answer
   x = 2,765.79