Finding the Fourth Proportional to 2,189.63, 3,022.38 and 1,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.63 : 3,022.38 = 1,526.72 : x
2. Step 2: Convert to fraction form
   2,189.63/3,022.38 = 1,526.72/x
3. Step 3: Cross multiply
   2,189.63x = 3,022.38 × 1,526.72
4. Step 4: Simplify right side
   2,189.63x = 4,614,312.88
5. Step 5: Solve for x
   x = 4,614,312.88/2,189.63
6. Step 6: Final answer
   x = 2,107.35