Finding the Fourth Proportional to 2,111.22, 3,164.04 and 1,528.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.22 : 3,164.04 = 1,528.17 : x
2. Step 2: Convert to fraction form
   2,111.22/3,164.04 = 1,528.17/x
3. Step 3: Cross multiply
   2,111.22x = 3,164.04 × 1,528.17
4. Step 4: Simplify right side
   2,111.22x = 4,835,191.01
5. Step 5: Solve for x
   x = 4,835,191.01/2,111.22
6. Step 6: Final answer
   x = 2,290.24