Finding the Fourth Proportional to 2,172.89, 3,259.33 and 1,526.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.89 : 3,259.33 = 1,526.51 : x
2. Step 2: Convert to fraction form
   2,172.89/3,259.33 = 1,526.51/x
3. Step 3: Cross multiply
   2,172.89x = 3,259.33 × 1,526.51
4. Step 4: Simplify right side
   2,172.89x = 4,975,404.17
5. Step 5: Solve for x
   x = 4,975,404.17/2,172.89
6. Step 6: Final answer
   x = 2,289.76